/// <summary>
        /// Parse XdsEntry
        /// </summary>
        public static XdsEntry ParseXdsEntry(IFhirReader reader, ErrorList errors, XdsEntry existingInstance = null)
        {
            XdsEntry result = existingInstance != null ? existingInstance : new XdsEntry();

            try
            {
                string currentElementName = reader.CurrentElementName;
                reader.EnterElement();

                while (reader.HasMoreElements())
                {
                    // Parse element extension
                    if (ParserUtils.IsAtFhirElement(reader, "extension"))
                    {
                        result.Extension = new List <Extension>();
                        reader.EnterArray();

                        while (ParserUtils.IsAtArrayElement(reader, "extension"))
                        {
                            result.Extension.Add(ExtensionParser.ParseExtension(reader, errors));
                        }

                        reader.LeaveArray();
                    }

                    // Parse element language
                    else if (ParserUtils.IsAtFhirElement(reader, "language"))
                    {
                        result.Language = CodeParser.ParseCode(reader, errors);
                    }

                    // Parse element text
                    else if (ParserUtils.IsAtFhirElement(reader, "text"))
                    {
                        result.Text = NarrativeParser.ParseNarrative(reader, errors);
                    }

                    // Parse element contained
                    else if (ParserUtils.IsAtFhirElement(reader, "contained"))
                    {
                        result.Contained = new List <Resource>();
                        reader.EnterArray();

                        while (ParserUtils.IsAtArrayElement(reader, "contained"))
                        {
                            result.Contained.Add(ParserUtils.ParseContainedResource(reader, errors));
                        }

                        reader.LeaveArray();
                    }

                    // Parse element internalId
                    else if (reader.IsAtRefIdElement())
                    {
                        result.InternalId = Id.Parse(reader.ReadRefIdContents());
                    }

                    // Parse element url
                    else if (ParserUtils.IsAtFhirElement(reader, "url"))
                    {
                        result.Url = FhirUriParser.ParseFhirUri(reader, errors);
                    }

                    // Parse element repositoryId
                    else if (ParserUtils.IsAtFhirElement(reader, "repositoryId"))
                    {
                        result.RepositoryId = FhirUriParser.ParseFhirUri(reader, errors);
                    }

                    // Parse element mimeType
                    else if (ParserUtils.IsAtFhirElement(reader, "mimeType"))
                    {
                        result.MimeType = FhirStringParser.ParseFhirString(reader, errors);
                    }

                    // Parse element format
                    else if (ParserUtils.IsAtFhirElement(reader, "format"))
                    {
                        result.Format = CodingParser.ParseCoding(reader, errors);
                    }

                    // Parse element class
                    else if (ParserUtils.IsAtFhirElement(reader, "class"))
                    {
                        result.Class = CodingParser.ParseCoding(reader, errors);
                    }

                    // Parse element type
                    else if (ParserUtils.IsAtFhirElement(reader, "type"))
                    {
                        result.Type = CodingParser.ParseCoding(reader, errors);
                    }

                    // Parse element title
                    else if (ParserUtils.IsAtFhirElement(reader, "title"))
                    {
                        result.Title = FhirStringParser.ParseFhirString(reader, errors);
                    }

                    // Parse element documentId
                    else if (ParserUtils.IsAtFhirElement(reader, "documentId"))
                    {
                        result.DocumentId = FhirUriParser.ParseFhirUri(reader, errors);
                    }

                    // Parse element availability
                    else if (ParserUtils.IsAtFhirElement(reader, "availability"))
                    {
                        result.Availability = CodeParser.ParseCode <XdsEntry.XdsEntryAvailability>(reader, errors);
                    }

                    // Parse element confidentialityCode
                    else if (ParserUtils.IsAtFhirElement(reader, "confidentialityCode"))
                    {
                        result.ConfidentialityCode = CodingParser.ParseCoding(reader, errors);
                    }

                    // Parse element created
                    else if (ParserUtils.IsAtFhirElement(reader, "created"))
                    {
                        result.Created = InstantParser.ParseInstant(reader, errors);
                    }

                    // Parse element event
                    else if (ParserUtils.IsAtFhirElement(reader, "event"))
                    {
                        result.Event = new List <Coding>();
                        reader.EnterArray();

                        while (ParserUtils.IsAtArrayElement(reader, "event"))
                        {
                            result.Event.Add(CodingParser.ParseCoding(reader, errors));
                        }

                        reader.LeaveArray();
                    }

                    // Parse element hash
                    else if (ParserUtils.IsAtFhirElement(reader, "hash"))
                    {
                        result.Hash = FhirStringParser.ParseFhirString(reader, errors);
                    }

                    // Parse element size
                    else if (ParserUtils.IsAtFhirElement(reader, "size"))
                    {
                        result.Size = FhirStringParser.ParseFhirString(reader, errors);
                    }

                    // Parse element lang
                    else if (ParserUtils.IsAtFhirElement(reader, "lang"))
                    {
                        result.Lang = FhirStringParser.ParseFhirString(reader, errors);
                    }

                    // Parse element folder
                    else if (ParserUtils.IsAtFhirElement(reader, "folder"))
                    {
                        result.Folder = new List <ResourceReference>();
                        reader.EnterArray();

                        while (ParserUtils.IsAtArrayElement(reader, "folder"))
                        {
                            result.Folder.Add(ResourceReferenceParser.ParseResourceReference(reader, errors));
                        }

                        reader.LeaveArray();
                    }

                    // Parse element patientId
                    else if (ParserUtils.IsAtFhirElement(reader, "patientId"))
                    {
                        result.PatientId = IdentifierParser.ParseIdentifier(reader, errors);
                    }

                    // Parse element sourcePatientId
                    else if (ParserUtils.IsAtFhirElement(reader, "sourcePatientId"))
                    {
                        result.SourcePatientId = IdentifierParser.ParseIdentifier(reader, errors);
                    }

                    // Parse element patientInfo
                    else if (ParserUtils.IsAtFhirElement(reader, "patientInfo"))
                    {
                        result.PatientInfo = ResourceReferenceParser.ParseResourceReference(reader, errors);
                    }

                    // Parse element author
                    else if (ParserUtils.IsAtFhirElement(reader, "author"))
                    {
                        result.Author = new List <XdsEntry.XdsEntryAuthorComponent>();
                        reader.EnterArray();

                        while (ParserUtils.IsAtArrayElement(reader, "author"))
                        {
                            result.Author.Add(XdsEntryParser.ParseXdsEntryAuthorComponent(reader, errors));
                        }

                        reader.LeaveArray();
                    }

                    // Parse element authenticator
                    else if (ParserUtils.IsAtFhirElement(reader, "authenticator"))
                    {
                        result.Authenticator = XdsEntryParser.ParseXdsEntryAuthenticatorComponent(reader, errors);
                    }

                    // Parse element facilityType
                    else if (ParserUtils.IsAtFhirElement(reader, "facilityType"))
                    {
                        result.FacilityType = CodingParser.ParseCoding(reader, errors);
                    }

                    // Parse element practiceSetting
                    else if (ParserUtils.IsAtFhirElement(reader, "practiceSetting"))
                    {
                        result.PracticeSetting = CodingParser.ParseCoding(reader, errors);
                    }

                    // Parse element homeCommunity
                    else if (ParserUtils.IsAtFhirElement(reader, "homeCommunity"))
                    {
                        result.HomeCommunity = FhirUriParser.ParseFhirUri(reader, errors);
                    }

                    // Parse element service
                    else if (ParserUtils.IsAtFhirElement(reader, "service"))
                    {
                        result.Service = XdsEntryParser.ParseXdsEntryServiceComponent(reader, errors);
                    }

                    // Parse element comments
                    else if (ParserUtils.IsAtFhirElement(reader, "comments"))
                    {
                        result.Comments = FhirStringParser.ParseFhirString(reader, errors);
                    }

                    else
                    {
                        errors.Add(String.Format("Encountered unknown element {0} while parsing {1}", reader.CurrentElementName, currentElementName), reader);
                        reader.SkipSubElementsFor(currentElementName);
                        result = null;
                    }
                }

                reader.LeaveElement();
            }
            catch (Exception ex)
            {
                errors.Add(ex.Message, reader);
            }
            return(result);
        }
        /// <summary>
        /// Parse XdsEntryAuthorComponent
        /// </summary>
        public static XdsEntry.XdsEntryAuthorComponent ParseXdsEntryAuthorComponent(IFhirReader reader, ErrorList errors, XdsEntry.XdsEntryAuthorComponent existingInstance = null)
        {
            XdsEntry.XdsEntryAuthorComponent result = existingInstance != null ? existingInstance : new XdsEntry.XdsEntryAuthorComponent();
            try
            {
                string currentElementName = reader.CurrentElementName;
                reader.EnterElement();

                while (reader.HasMoreElements())
                {
                    // Parse element extension
                    if (ParserUtils.IsAtFhirElement(reader, "extension"))
                    {
                        result.Extension = new List <Extension>();
                        reader.EnterArray();

                        while (ParserUtils.IsAtArrayElement(reader, "extension"))
                        {
                            result.Extension.Add(ExtensionParser.ParseExtension(reader, errors));
                        }

                        reader.LeaveArray();
                    }

                    // Parse element internalId
                    else if (reader.IsAtRefIdElement())
                    {
                        result.InternalId = Id.Parse(reader.ReadRefIdContents());
                    }

                    // Parse element name
                    else if (ParserUtils.IsAtFhirElement(reader, "name"))
                    {
                        result.Name = HumanNameParser.ParseHumanName(reader, errors);
                    }

                    // Parse element id
                    else if (ParserUtils.IsAtFhirElement(reader, "id"))
                    {
                        result.Id = IdentifierParser.ParseIdentifier(reader, errors);
                    }

                    // Parse element role
                    else if (ParserUtils.IsAtFhirElement(reader, "role"))
                    {
                        result.Role = new List <FhirString>();
                        reader.EnterArray();

                        while (ParserUtils.IsAtArrayElement(reader, "role"))
                        {
                            result.Role.Add(FhirStringParser.ParseFhirString(reader, errors));
                        }

                        reader.LeaveArray();
                    }

                    // Parse element specialty
                    else if (ParserUtils.IsAtFhirElement(reader, "specialty"))
                    {
                        result.Specialty = new List <FhirString>();
                        reader.EnterArray();

                        while (ParserUtils.IsAtArrayElement(reader, "specialty"))
                        {
                            result.Specialty.Add(FhirStringParser.ParseFhirString(reader, errors));
                        }

                        reader.LeaveArray();
                    }

                    // Parse element institution
                    else if (ParserUtils.IsAtFhirElement(reader, "institution"))
                    {
                        result.Institution = new List <XdsEntry.XdsEntryAuthorInstitutionComponent>();
                        reader.EnterArray();

                        while (ParserUtils.IsAtArrayElement(reader, "institution"))
                        {
                            result.Institution.Add(XdsEntryParser.ParseXdsEntryAuthorInstitutionComponent(reader, errors));
                        }

                        reader.LeaveArray();
                    }

                    // Parse element contact
                    else if (ParserUtils.IsAtFhirElement(reader, "contact"))
                    {
                        result.Contact = new List <Contact>();
                        reader.EnterArray();

                        while (ParserUtils.IsAtArrayElement(reader, "contact"))
                        {
                            result.Contact.Add(ContactParser.ParseContact(reader, errors));
                        }

                        reader.LeaveArray();
                    }

                    else
                    {
                        errors.Add(String.Format("Encountered unknown element {0} while parsing {1}", reader.CurrentElementName, currentElementName), reader);
                        reader.SkipSubElementsFor(currentElementName);
                        result = null;
                    }
                }

                reader.LeaveElement();
            }
            catch (Exception ex)
            {
                errors.Add(ex.Message, reader);
            }
            return(result);
        }