code: function IDLFilePath(path) {
        var extension = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '.graphql';
        return Symbol.for("Path ".concat(path, " Extension ").concat(extension));
      }
docs: Creates an appropriate Symbol crafted with the right data for use by
  the IDLFileHandler class below.
  
  @static
  @memberof GQLBase
  @method ⌾⠀IDLFilePath
  
  @param {string} path a path to the IDL containing file
  @param {string} [extension='.graphql'] an extension, including the
  prefixed period, that will be added to the supplied path should it not
  already exist.
  @return Symbol
  
  @see {@link GQLBase#SCHEMA}