{
  "openapi": "3.1.0",
  "info": {
    "title": "OpenAPI 3.1.0 validators union merge example",
    "version": "1"
  },
  "components": {
    "schemas": {
      "User": {
        "allOf": [
          {
            "$ref": "#/components/schemas/Contact"
          },
          {
            "properties": {
              "username": {
                "type": "string"
              }
            },
            "required": ["username"],
            "type": "object"
          }
        ]
      },
      "Contact": {
        "oneOf": [
          {
            "properties": {
              "email": {
                "type": "string"
              }
            },
            "required": ["email"],
            "type": "object"
          },
          {
            "properties": {
              "phone": {
                "type": "string"
              }
            },
            "required": ["phone"],
            "type": "object"
          }
        ]
      },
      "PetStore": {
        "type": "object",
        "required": ["animals"],
        "properties": {
          "animals": {
            "type": "array",
            "items": {
              "type": "object",
              "required": ["name", "details"],
              "properties": {
                "name": {
                  "type": "string"
                },
                "type": {
                  "type": "string",
                  "enum": ["dog", "cat"],
                  "default": "dog"
                },
                "details": {
                  "oneOf": [
                    { "$ref": "#/components/schemas/DogDetails" },
                    { "$ref": "#/components/schemas/CatDetails" }
                  ]
                }
              }
            }
          }
        }
      },
      "DogDetails": {
        "type": "object",
        "required": ["breed", "barkVolume"],
        "properties": {
          "breed": {
            "type": "string"
          },
          "barkVolume": {
            "type": "integer",
            "minimum": 1,
            "maximum": 10
          }
        }
      },
      "CatDetails": {
        "type": "object",
        "required": ["furLength", "purrs"],
        "properties": {
          "furLength": {
            "type": "string",
            "enum": ["short", "medium", "long"]
          },
          "purrs": {
            "type": "boolean"
          }
        }
      }
    }
  }
}