@ApiResponse.response of primitive types is reported incorrectly

[tomtit]

Swagger version is 1.5.3-M2-SNAPSHOT (branch develop_2.0)
This test resource:

@Api
@Path("xxx")
public class ResourceXXX {

  @GET
  @Path("test")
  @ApiResponses({ @ApiResponse(code = 400, message = "Message for URL", response = URL.class),
      @ApiResponse(code = 401, message = "Message for Long", response = Long.class),
      @ApiResponse(code = 402, message = "Message for String", response = String.class) })
  public Response test() {
    return null;
  }
}

is reported as follows:

{
  "swagger" : "2.0",
  "paths" : {
    "/xxx/test" : {
      "get" : {
        "operationId" : "test",
        "parameters" : [ ],
        "responses" : {
          "400" : {
            "description" : "Message for URL",
            "schema" : {
              "$ref" : "#/definitions/string"
            }
          },
          "401" : {
            "description" : "Message for Long"
          },
          "402" : {
            "description" : "Message for String"
          }
        }
      }
    }
  },
  "definitions" : {
    "string" : {
      "type" : "object",
      "properties" : {
        "protocol" : {
          "type" : "string"
        },
        "host" : {
          "type" : "string"
        },
        "port" : {
          "type" : "integer",
          "format" : "int32"
        },
        "file" : {
          "type" : "string"
        },
        "authority" : {
          "type" : "string"
        },
        "ref" : {
          "type" : "string"
        },
        "path" : {
          "type" : "string"
        },
        "query" : {
          "type" : "string"
        },
        "userInfo" : {
          "type" : "string"
        },
        "defaultPort" : {
          "type" : "integer",
          "format" : "int32"
        },
        "content" : {
          "type" : "object"
        }
      }
    }
  }
}

As you can see URL was reported as composite class of type string, Long and String were not reported at all.