public JsonSchemaNode AddSchema(JsonSchemaNode existingNode, JsonSchema schema) { string newId; if (existingNode != null) { if (existingNode.Schemas.Contains(schema)) { return(existingNode); } newId = JsonSchemaNode.GetId(existingNode.Schemas.Union(new[] { schema })); } else { newId = JsonSchemaNode.GetId(new[] { schema }); } if (_nodes.Contains(newId)) { return(_nodes[newId]); } JsonSchemaNode currentNode = (existingNode != null) ? existingNode.Combine(schema) : new JsonSchemaNode(schema); _nodes.Add(currentNode); AddProperties(schema.Properties, currentNode.Properties); AddProperties(schema.PatternProperties, currentNode.PatternProperties); if (schema.Items != null) { for (int i = 0; i < schema.Items.Count; i++) { AddItem(currentNode, i, schema.Items[i]); } } if (schema.AdditionalProperties != null) { AddAdditionalProperties(currentNode, schema.AdditionalProperties); } if (schema.Extends != null) { currentNode = AddSchema(currentNode, schema.Extends); } return(currentNode); }