openapi schema with multipart and json inputs with different payloads for same endpoint

openapi-upload-multipart-and-json.json

{
  "openapi": "3.0.0",
  "info": {
    "title": "API",
    "description": "API",
    "version": "1.0"
  },
  "components": {
    "schemas": {
      "FileInput": {
        "type": "object",
        "properties": {
          "file": {
            "type": "string",
            "format": "binary"
          }
        },
        "required": [
          "file"
        ]
      },
      "FileInputAsJson": {
        "type": "object",
        "properties": {
          "key": {
            "type": "string"
          }
        },
        "required": [
          "key"
        ]
      }
    }
  },
  "paths": {
    "/api/v2/action/": {
      "post": {
        "responses": {
          "201": {
            "description": ""
          }
        },
        "tags": [
          "v2api"
        ],
        "security": [
          {
            "jwt": []
          }
        ],
        "operationId": "upload2",
        "summary": "Upload file temporarily",
        "requestBody": {
          "content": {
            "multipart/form-data": {
              "schema": {
                "$ref": "#/components/schemas/FileInput"
              }
            },
            "application/json": {
              "schema": {
                "$ref": "#/components/schemas/FileInputAsJson"
              }
            }
          }
        }
      }
    }
  }
}