Ejemplo n.º 1
0
        private static void WriteMapInternal <T>(
            this IOpenApiWriter writer,
            string name,
            IDictionary <string, T> elements,
            Action <IOpenApiWriter, string, T> action)
        {
            CheckArguments(writer, name, action);

            writer.WritePropertyName(name);
            writer.WriteStartObject();

            if (elements != null)
            {
                foreach (var item in elements)
                {
                    writer.WritePropertyName(item.Key);
                    if (item.Value != null)
                    {
                        action(writer, item.Key, item.Value);
                    }
                    else
                    {
                        writer.WriteNull();
                    }
                }
            }

            writer.WriteEndObject();
        }
    public void Write(IOpenApiWriter writer)
    {
        writer.WriteStartObject();

        if (!string.IsNullOrWhiteSpace(Credentials))
        {
            writer.WriteProperty("credentials", Credentials);
        }

        writer.WritePropertyName("responses");
        {
            writer.WriteStartObject();
            writer.WritePropertyName("default");
            {
                writer.WriteStartObject();
                writer.WriteProperty("statusCode", "200");
                writer.WriteEndObject();
            }
            writer.WriteEndObject();
        }

        writer.WriteProperty("uri", LambdaUri);
        writer.WriteProperty("passthroughBehavior", "when_no_templates");
        writer.WriteProperty("httpMethod", HttpMethod);
        writer.WriteProperty("type", "aws");
        writer.WriteEndObject();
    }
Ejemplo n.º 3
0
        /// <summary>
        /// Serialize to OpenAPI V2 document without using reference.
        /// </summary>
        public void SerializeAsV2WithoutReference(IOpenApiWriter writer)
        {
            writer.WriteStartObject();

            // description
            writer.WriteRequiredProperty(OpenApiConstants.Description, Description);

            var extensionsClone = new Dictionary <string, IOpenApiExtension>(Extensions);

            if (Content != null)
            {
                var mediatype = Content.FirstOrDefault();
                if (mediatype.Value != null)
                {
                    // schema
                    writer.WriteOptionalObject(
                        OpenApiConstants.Schema,
                        mediatype.Value.Schema,
                        (w, s) => s.SerializeAsV2(w));

                    // examples
                    if (Content.Values.Any(m => m.Example != null))
                    {
                        writer.WritePropertyName(OpenApiConstants.Examples);
                        writer.WriteStartObject();

                        foreach (var mediaTypePair in Content)
                        {
                            if (mediaTypePair.Value.Example != null)
                            {
                                writer.WritePropertyName(mediaTypePair.Key);
                                writer.WriteAny(mediaTypePair.Value.Example);
                            }
                        }

                        writer.WriteEndObject();
                    }

                    writer.WriteExtensions(mediatype.Value.Extensions, OpenApiSpecVersion.OpenApi2_0);

                    foreach (var key in mediatype.Value.Extensions.Keys)
                    {
                        // The extension will already have been serialized as part of the call above,
                        // so remove it from the cloned collection so we don't write it again.
                        extensionsClone.Remove(key);
                    }
                }
            }

            // headers
            writer.WriteOptionalMap(OpenApiConstants.Headers, Headers, (w, h) => h.SerializeAsV2(w));

            // extension
            writer.WriteExtensions(extensionsClone, OpenApiSpecVersion.OpenApi2_0);

            writer.WriteEndObject();
        }
        private static void WritePropertyInternal <T>(this IOpenApiWriter writer, string name, T element)
        {
            CheckArgument(writer, name);

            writer.WritePropertyName(name);
            writer.WriteValueInternal(element);
        }
Ejemplo n.º 5
0
        private static void WriteCollectionInternal <T>(
            this IOpenApiWriter writer,
            string name,
            IEnumerable <T> elements,
            Action <IOpenApiWriter, T> action)
        {
            CheckArguments(writer, name, action);

            writer.WritePropertyName(name);
            writer.WriteStartArray();
            if (elements != null)
            {
                foreach (var item in elements)
                {
                    if (item != null)
                    {
                        action(writer, item);
                    }
                    else
                    {
                        writer.WriteNull();
                    }
                }
            }

            writer.WriteEndArray();
        }
Ejemplo n.º 6
0
        /// <summary>Writes the specified writer.</summary>
        /// <param name="writer">The writer.</param>
        /// <param name="specVersion">The spec version.</param>
        public void Write(IOpenApiWriter writer, OpenApiSpecVersion specVersion)
        {
            writer.WriteStartObject();

            writer.WriteProperty("name", this.enumType.Name);
            writer.WriteProperty("modelAsString", this.enumModeling == OasEnumModeling.AsString);
            writer.WritePropertyName("values");

            var items = Enum.GetValues(enumType);

            writer.WriteStartArray();

            foreach (var item in items)
            {
                var summary = OasDocHelpers.GetFieldDocumentationSummary(enumType, item.ToString(), this.commentDocs);

                writer.WriteStartObject();

                writer.WriteProperty("value", this.namingPolicy.ConvertName(item.ToString()));
                writer.WriteProperty("name", this.namingPolicy.ConvertName(item.ToString()));

                if (!string.IsNullOrWhiteSpace(summary))
                {
                    writer.WriteProperty("description", summary);
                }

                writer.WriteEndObject();
            }

            writer.WriteEndArray();
            writer.WriteEndObject();
        }
 private void Write(IOpenApiWriter writer, object value)
 {
     if (value is string s)
     {
         writer.WriteValue(s);
     }
     else if (value is IList <object> l)
     {
         writer.WriteStartArray();
         foreach (var o in l)
         {
             Write(writer, o);
         }
         writer.WriteEndArray();
     }
     else if (value is IDictionary <object, object> d)
     {
         writer.WriteStartObject();
         foreach (var o in d)
         {
             Write(writer, o);
         }
         writer.WriteEndObject();
     }
     else if (value is KeyValuePair <object, object> kvp)
     {
         writer.WritePropertyName((string)kvp.Key);
         Write(writer, kvp.Value);
     }
     else
     {
         throw new NotSupportedException($"Value: {value}");
     }
 }
Ejemplo n.º 8
0
        /// <summary>
        /// Serialize <see cref="OpenApiReference"/> to Open Api v2.0.
        /// </summary>
        public void SerializeAsV2(IOpenApiWriter writer)
        {
            if (writer == null)
            {
                throw Error.ArgumentNull(nameof(writer));
            }

            if (Type == ReferenceType.Tag)
            {
                // Write the string value only
                writer.WriteValue(ReferenceV2);
                return;
            }

            if (Type == ReferenceType.SecurityScheme)
            {
                // Write the string as property name
                writer.WritePropertyName(ReferenceV2);
                return;
            }

            writer.WriteStartObject();

            // $ref
            writer.WriteProperty(OpenApiConstants.DollarRef, ReferenceV2);

            writer.WriteEndObject();
        }
        /// <summary>
        /// Write Any object to the given writer.
        /// </summary>
        /// <param name="writer">The writer.</param>
        public void Write(IOpenApiWriter writer)
        {
            if (writer == null)
            {
                throw Error.ArgumentNull("writer");
            }

            // { for json, empty for YAML
            writer.WriteStartObject();

            foreach (var item in this)
            {
                writer.WritePropertyName(item.Key);

                IOpenApiWritable writerElement = item.Value as IOpenApiWritable;
                if (writerElement != null)
                {
                    writerElement.Write(writer);
                }
                else
                {
                    writer.WriteValue(item.Value);
                }
            }

            // } for json, empty for YAML
            writer.WriteEndObject();
        }
        /// <summary>
        /// Write Open API server variable object.
        /// </summary>
        /// <param name="writer">The Open API Writer.</param>
        public virtual void Write(IOpenApiWriter writer)
        {
            if (writer == null)
            {
                throw Error.ArgumentNull("writer");
            }

            // { for JSON, empty for YAML
            writer.WriteStartObject();

            // default
            writer.WriteRequiredProperty(OpenApiConstants.OpenApiDocDefault, Default);

            // description
            writer.WriteOptionalProperty(OpenApiConstants.OpenApiDocDescription, Description);

            // enums
            if (Enums != null && Enums.Any())
            {
                writer.WritePropertyName(OpenApiConstants.OpenApiDocEnum);
                writer.WriteStartArray();
                foreach (string item in Enums)
                {
                    writer.WriteValue(item);
                }
                writer.WriteEndArray();
            }

            // specification extensions
            writer.WriteDictionary(Extensions);

            // } for JSON, empty for YAML
            writer.WriteEndObject();
        }
Ejemplo n.º 11
0
 /// <summary>
 /// Write a string/number property.
 /// </summary>
 /// <param name="writer">The writer.</param>
 /// <param name="name">The property name.</param>
 /// <param name="value">The property value.</param>
 public static void WriteProperty <T>(this IOpenApiWriter writer, string name, T value)
     where T : struct
 {
     CheckArguments(writer, name);
     writer.WritePropertyName(name);
     writer.WriteValue(value);
 }
Ejemplo n.º 12
0
        /// <summary>
        /// Serialize to OpenAPI V2 document without using reference.
        /// </summary>
        public void SerializeAsV2WithoutReference(IOpenApiWriter writer)
        {
            writer.WriteStartObject();

            // description
            writer.WriteProperty(OpenApiConstants.Description, Description);
            if (Content != null)
            {
                var mediatype = Content.FirstOrDefault();
                if (mediatype.Value != null)
                {
                    // schema
                    writer.WriteOptionalObject(
                        OpenApiConstants.Schema,
                        mediatype.Value.Schema,
                        (w, s) => s.SerializeAsV2(w));

                    // examples
                    if (Content.Values.Any(m => m.Example != null))
                    {
                        writer.WritePropertyName(OpenApiConstants.Examples);
                        writer.WriteStartObject();

                        foreach (var mediaTypePair in Content)
                        {
                            if (mediaTypePair.Value.Example != null)
                            {
                                writer.WritePropertyName(mediaTypePair.Key);
                                writer.WriteAny(mediaTypePair.Value.Example);
                            }
                        }

                        writer.WriteEndObject();
                    }
                }
            }

            // headers
            writer.WriteOptionalMap(OpenApiConstants.Headers, Headers, (w, h) => h.SerializeAsV2(w));

            // extension
            writer.WriteExtensions(Extensions, OpenApiSpecVersion.OpenApi2_0);

            writer.WriteEndObject();
        }
        private static void WriteDictionaryInternal <T>(this IOpenApiWriter writer, string name, IDictionary <string, T> elements)
        {
            CheckArgument(writer, name);

            writer.WritePropertyName(name);

            writer.WriteStartObject();

            if (elements != null)
            {
                foreach (KeyValuePair <string, T> e in elements)
                {
                    writer.WritePropertyName(e.Key);
                    writer.WriteValueInternal(e.Value);
                }
            }

            writer.WriteEndObject();
        }
Ejemplo n.º 14
0
        /// <summary>
        /// Write a boolean property.
        /// </summary>
        /// <param name="writer">The writer.</param>
        /// <param name="name">The property name.</param>
        /// <param name="value">The property value.</param>
        /// <param name="defaultValue">The default boolean value.</param>
        public static void WriteProperty(this IOpenApiWriter writer, string name, bool value, bool defaultValue = false)
        {
            if (value == defaultValue)
            {
                return;
            }

            CheckArguments(writer, name);
            writer.WritePropertyName(name);
            writer.WriteValue(value);
        }
Ejemplo n.º 15
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        private void WriteProperties(IOpenApiWriter writer, JSchema schema)
        {
            if (schema.Properties != null)
            {
                foreach (var property in schema.Properties)
                {
                    writer.WritePropertyName(property.Key);
                    Providers.WriteValueOrThrow(writer, property.Value);
                }
            }

            if (schema.AdditionalProperties != null)
            {
                foreach (string property in AdditionalPropertiesExampleNames)
                {
                    writer.WritePropertyName(property);
                    Providers.WriteValueOrThrow(writer, schema.AdditionalProperties);
                }
            }
        }
Ejemplo n.º 16
0
        /// <summary>
        /// Write a string property.
        /// </summary>
        /// <param name="writer">The writer.</param>
        /// <param name="name">The property name.</param>
        /// <param name="value">The property value.</param>
        public static void WriteProperty(this IOpenApiWriter writer, string name, string value)
        {
            if (value == null)
            {
                return;
            }

            CheckArguments(writer, name);
            writer.WritePropertyName(name);
            writer.WriteValue(value);
        }
Ejemplo n.º 17
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        /// <summary>
        /// Serialize OpenApiObject to writer
        /// </summary>
        /// <param name="writer"></param>
        public void Write(IOpenApiWriter writer)
        {
            writer.WriteStartObject();

            foreach (var item in this)
            {
                writer.WritePropertyName(item.Key);
                writer.WriteAny(item.Value);
            }

            writer.WriteEndObject();
        }
Ejemplo n.º 18
0
 /// <summary>
 /// Write required string property.
 /// </summary>
 /// <param name="writer">The writer.</param>
 /// <param name="name">The property name.</param>
 /// <param name="value">The property value.</param>
 public static void WriteRequiredProperty(this IOpenApiWriter writer, string name, string value)
 {
     CheckArguments(writer, name);
     writer.WritePropertyName(name);
     if (value == null)
     {
         writer.WriteNull();
     }
     else
     {
         writer.WriteValue(value);
     }
 }
        /// <summary>
        /// Write the specification extensions
        /// </summary>
        /// <param name="writer">The Open API writer.</param>
        /// <param name="extensions">The specification extensions.</param>
        /// <param name="specVersion">Version of the OpenAPI specification that that will be output.</param>
        public static void WriteExtensions(this IOpenApiWriter writer, IDictionary <string, IOpenApiExtension> extensions, OpenApiSpecVersion specVersion)
        {
            if (writer == null)
            {
                throw Error.ArgumentNull(nameof(writer));
            }

            if (extensions != null)
            {
                foreach (var item in extensions)
                {
                    writer.WritePropertyName(item.Key);
                    item.Value.Write(writer, specVersion);
                }
            }
        }
        private static void WriteCollectionInternal <T>(this IOpenApiWriter writer, string name, IEnumerable <T> elements)
        {
            CheckArgument(writer, name);

            writer.WritePropertyName(name);

            writer.WriteStartArray();

            if (elements != null)
            {
                foreach (T e in elements)
                {
                    writer.WriteValueInternal(e);
                }
            }

            writer.WriteEndArray();
        }
Ejemplo n.º 21
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            public bool TryWriteValue(IOpenApiWriter writer, JSchema schema)
            {
                switch (schema.Type)
                {
                case JSchemaType.String:
                    writer.WriteValue("text");
                    return(true);

                case JSchemaType.Number:
                case JSchemaType.Integer:
                    writer.WriteValue(42);
                    return(true);

                case JSchemaType.Boolean:
                    writer.WriteValue(true);
                    return(true);

                case JSchemaType.None:
                    return(true);

                case JSchemaType.Null:
                    writer.WriteNull();
                    return(true);

                case null:
                    return(true);

                case JSchemaType.Object:
                    writer.WriteStartObject();
                    foreach (var(propName, propSchema) in schema.Properties)
                    {
                        writer.WritePropertyName(propName);
                        TryWriteValue(writer, propSchema);
                    }
                    writer.WriteEndObject();
                    return(true);

                case JSchemaType.Array:
                    return(false);

                default:
                    throw new ArgumentOutOfRangeException();
                }
            }
        /// <summary>
        /// Write Open API document to given writer.
        /// </summary>
        /// <param name="writer">The writer.</param>
        public virtual void Write(IOpenApiWriter writer)
        {
            if (writer == null)
            {
                throw Error.ArgumentNull("writer");
            }

            writer.WritePropertyName(Name);

            if (Value is IOpenApiWritable)
            {
                ((IOpenApiWritable)Value).Write(writer);
            }
            else
            {
                // TODO:
                writer.WriteValue(Value);
            }
        }
Ejemplo n.º 23
0
        /// <summary>
        /// Write the required Open API object/element.
        /// </summary>
        /// <typeparam name="T">The Open API element type. <see cref="IOpenApiElement"/></typeparam>
        /// <param name="writer">The Open API writer.</param>
        /// <param name="name">The property name.</param>
        /// <param name="value">The property value.</param>
        /// <param name="action">The proprety value writer action.</param>
        public static void WriteRequiredObject <T>(
            this IOpenApiWriter writer,
            string name,
            T value,
            Action <IOpenApiWriter, T> action)
            where T : IOpenApiElement
        {
            CheckArguments(writer, name, action);

            writer.WritePropertyName(name);
            if (value != null)
            {
                action(writer, value);
            }
            else
            {
                writer.WriteStartObject();
                writer.WriteEndObject();
            }
        }
        /// <summary>
        /// Write property with an action.
        /// </summary>
        /// <param name="writer">The writer.</param>
        /// <param name="name">The property name.</param>
        /// <param name="valueAction">The value action.</param>
        public static void WriteProperty(this IOpenApiWriter writer, string name,
                                         Action valueAction)
        {
            if (writer == null)
            {
                throw Error.ArgumentNull("writer");
            }

            if (String.IsNullOrWhiteSpace(name))
            {
                throw Error.ArgumentNullOrEmpty("name");
            }

            if (valueAction == null)
            {
                return;
            }

            writer.WritePropertyName(name);
            valueAction();
        }
        private static void WriteObject(this IOpenApiWriter writer, OpenApiObject entity)
        {
            if (writer == null)
            {
                throw Error.ArgumentNull(nameof(writer));
            }

            if (entity == null)
            {
                throw Error.ArgumentNull(nameof(entity));
            }

            writer.WriteStartObject();

            foreach (var item in entity)
            {
                writer.WritePropertyName(item.Key);
                writer.WriteAny(item.Value);
            }

            writer.WriteEndObject();
        }
Ejemplo n.º 26
0
        /// <summary>
        /// Serialize <see cref="OpenApiOperation"/> to Open Api v2.0.
        /// </summary>
        public void SerializeAsV2(IOpenApiWriter writer)
        {
            if (writer == null)
            {
                throw Error.ArgumentNull(nameof(writer));
            }

            writer.WriteStartObject();

            // tags
            writer.WriteOptionalCollection(
                OpenApiConstants.Tags,
                Tags,
                (w, t) =>
            {
                t.SerializeAsV3(w);
            });

            // summary
            writer.WriteProperty(OpenApiConstants.Summary, Summary);

            // description
            writer.WriteProperty(OpenApiConstants.Description, Description);

            // externalDocs
            writer.WriteOptionalObject(OpenApiConstants.ExternalDocs, ExternalDocs, (w, e) => e.SerializeAsV2(w));

            // operationId
            writer.WriteProperty(OpenApiConstants.OperationId, OperationId);

            IList <OpenApiParameter> parameters;

            if (Parameters == null)
            {
                parameters = new List <OpenApiParameter>();
            }
            else
            {
                parameters = new List <OpenApiParameter>(Parameters);
            }

            if (RequestBody != null)
            {
                // consumes
                writer.WritePropertyName(OpenApiConstants.Consumes);
                writer.WriteStartArray();
                var consumes = RequestBody.Content.Keys.Distinct().ToList();
                foreach (var mediaType in consumes)
                {
                    writer.WriteValue(mediaType);
                }

                writer.WriteEndArray();

                // This is form data. We need to split the request body into multiple parameters.
                if (consumes.Contains("application/x-www-form-urlencoded") ||
                    consumes.Contains("multipart/form-data"))
                {
                    foreach (var property in RequestBody.Content.First().Value.Schema.Properties)
                    {
                        parameters.Add(
                            new OpenApiFormDataParameter
                        {
                            Description = property.Value.Description,
                            Name        = property.Key,
                            Schema      = property.Value,
                            Required    = RequestBody.Content.First().Value.Schema.Required.Contains(property.Key)
                        });
                    }
                }
                else
                {
                    var bodyParameter = new OpenApiBodyParameter
                    {
                        Description = RequestBody.Description,
                        // V2 spec actually allows the body to have custom name.
                        // Our library does not support this at the moment.
                        Name     = "body",
                        Schema   = RequestBody.Content.First().Value.Schema,
                        Required = RequestBody.Required
                    };

                    parameters.Add(bodyParameter);
                }
            }

            if (Responses != null)
            {
                var produces = Responses.Where(r => r.Value.Content != null)
                               .SelectMany(r => r.Value.Content?.Keys)
                               .Distinct()
                               .ToList();

                if (produces.Any())
                {
                    // produces
                    writer.WritePropertyName(OpenApiConstants.Produces);
                    writer.WriteStartArray();
                    foreach (var mediaType in produces)
                    {
                        writer.WriteValue(mediaType);
                    }

                    writer.WriteEndArray();
                }
            }

            // parameters
            // Use the parameters created locally to include request body if exists.
            writer.WriteOptionalCollection(OpenApiConstants.Parameters, parameters, (w, p) => p.SerializeAsV2(w));

            // responses
            writer.WriteRequiredObject(OpenApiConstants.Responses, Responses, (w, r) => r.SerializeAsV2(w));

            // schemes
            // All schemes in the Servers are extracted, regardless of whether the host matches
            // the host defined in the outermost Swagger object. This is due to the
            // inaccessibility of information for that host in the context of an inner object like this Operation.
            if (Servers != null)
            {
                var schemes = Servers.Select(
                    s =>
                {
                    Uri.TryCreate(s.Url, UriKind.RelativeOrAbsolute, out var url);
                    return(url?.Scheme);
                })
                              .Where(s => s != null)
                              .Distinct()
                              .ToList();

                writer.WriteOptionalCollection(OpenApiConstants.Schemes, schemes, (w, s) => w.WriteValue(s));
            }

            // deprecated
            writer.WriteProperty(OpenApiConstants.Deprecated, Deprecated, false);

            // security
            writer.WriteOptionalCollection(OpenApiConstants.Security, Security, (w, s) => s.SerializeAsV2(w));

            // specification extensions
            writer.WriteExtensions(Extensions);

            writer.WriteEndObject();
        }
Ejemplo n.º 27
0
        /// <summary>
        /// Serialize <see cref="OpenApiOperation"/> to Open Api v2.0.
        /// </summary>
        public void SerializeAsV2(IOpenApiWriter writer)
        {
            if (writer == null)
            {
                throw Error.ArgumentNull(nameof(writer));
            }

            writer.WriteStartObject();

            // tags
            writer.WriteOptionalCollection(
                OpenApiConstants.Tags,
                Tags,
                (w, t) =>
            {
                t.SerializeAsV3(w);
            });

            // summary
            writer.WriteProperty(OpenApiConstants.Summary, Summary);

            // description
            writer.WriteProperty(OpenApiConstants.Description, Description);

            // externalDocs
            writer.WriteOptionalObject(OpenApiConstants.ExternalDocs, ExternalDocs, (w, e) => e.SerializeAsV2(w));

            // operationId
            writer.WriteProperty(OpenApiConstants.OperationId, OperationId);

            IList <OpenApiParameter> parameters;

            if (Parameters == null)
            {
                parameters = new List <OpenApiParameter>();
            }
            else
            {
                parameters = new List <OpenApiParameter>(Parameters);
            }

            if (RequestBody != null)
            {
                // consumes
                writer.WritePropertyName(OpenApiConstants.Consumes);
                writer.WriteStartArray();
                var consumes = RequestBody.Content.Keys.Distinct().ToList();
                foreach (var mediaType in consumes)
                {
                    writer.WriteValue(mediaType);
                }

                writer.WriteEndArray();

                // Create a parameter as BodyParameter type and add to Parameters.
                // This type will be used to populate the In property as "body" when Parameters is serialized.
                var bodyParameter = new BodyParameter
                {
                    Description = RequestBody.Description,
                    Schema      = RequestBody.Content.First().Value.Schema,
                    Format      = new List <string>(consumes)
                };

                parameters.Add(bodyParameter);
            }

            if (Responses != null)
            {
                var produces = Responses.Where(r => r.Value.Content != null)
                               .SelectMany(r => r.Value.Content?.Keys)
                               .Distinct()
                               .ToList();

                if (produces.Any())
                {
                    // produces
                    writer.WritePropertyName(OpenApiConstants.Produces);
                    writer.WriteStartArray();
                    foreach (var mediaType in produces)
                    {
                        writer.WriteValue(mediaType);
                    }

                    writer.WriteEndArray();
                }
            }

            // parameters
            // Use the parameters created locally to include request body if exists.
            writer.WriteOptionalCollection(OpenApiConstants.Parameters, parameters, (w, p) => p.SerializeAsV2(w));

            // responses
            writer.WriteRequiredObject(OpenApiConstants.Responses, Responses, (w, r) => r.SerializeAsV2(w));

            // schemes
            // All schemes in the Servers are extracted, regardless of whether the host matches
            // the host defined in the outermost Swagger object. This is due to the
            // inaccessibility of information for that host in the context of an inner object like this Operation.
            if (Servers != null)
            {
                var schemes = Servers.Select(
                    s =>
                {
                    Uri.TryCreate(s.Url, UriKind.RelativeOrAbsolute, out var url);
                    return(url?.Scheme);
                })
                              .Where(s => s != null)
                              .Distinct()
                              .ToList();

                writer.WriteOptionalCollection(OpenApiConstants.Schemes, schemes, (w, s) => w.WriteValue(s));
            }

            // deprecated
            writer.WriteProperty(OpenApiConstants.Deprecated, Deprecated, false);

            // security
            writer.WriteOptionalCollection(OpenApiConstants.Security, Security, (w, s) => s.SerializeAsV2(w));

            // specification extensions
            writer.WriteExtensions(Extensions);

            writer.WriteEndObject();
        }