Demonstration of Swagger UI issue 17771. View with http://petstore.swagger.io/?url=https://gist.githubusercontent.com/DavidBiesack/9cda3bb134216b4b0530/raw/ea26298368ea36681c9b2aa89da88f34b624def7/swagger-issue-issues-1771.json

swagger-issue-issues-1771.json

{
    "swagger": "2.0",

    "info":
    {
        "version": "1.0.0",
        "title": "Ref Demo",
        "description": "This demonstrates references to parameter that have references to definitions do not display properly in the swagger UI."
    },

    "parameters":
    {
        "ObjectParm":
        {
            "name": "object information",
            "in": "body",
            "description": "The object's information",
            "required": true,
            "schema": { "$ref": "#/definitions/Object" }
        }
    },

    "paths":
    {
        "/parms":
        {
            "post":
            {
                "summary": "Create the object",
                "description": "Create a new object",
                "parameters":
                [
                    { "$ref": "#/parameters/ObjectParm" }
                ],

                "responses":
                {
                    "201":
                    {
                        "description": "Created",
                        "schema":      { "$ref": "#/definitions/Object" }
                    },

                    "400": { "description": "Bad request"},
                    "401": { "description": "Not authenticated" },
                    "403": { "description": "Forbidden - the user does not have permission to complete this request" }
                }
            }
        }
    },

    "definitions":
    {
        "Object":
        {
            "properties":
            {
                "name":
                {
                    "type": "string",
                    "description": "localizable server name"
                }
            }
        }
    }
}