{
   "openapi": "3.0.0",
   "info": {},
   "paths": {},
   "components": {
      "schemas": {
         "Struct": {
            "type": "object",
            "properties": {
               "a": {
                  "$ref": "#/components/schemas/Struct.T"
               },
               "b": {
                  "$ref": "#/components/schemas/Struct.T"
               }
            }
         },
         "Struct.T": {
            "type": "integer"
         }
      }
   }
}