lib/api/modules/identifiers.js
function (identifierUrn, params) {
    var path = this.constructPath(constants.IDENTIFIERS, identifierUrn);
    return this.Core.GET(path, params);
  }
function (identifierUrn, params) {
    var path = this.constructPath(constants.IDENTIFIERS, identifierUrn);
    return this.Core.GET(path, params);
  }
function ( identifierUrn , params ) { var path = this . constructPath ( constants . IDENTIFIERS , identifierUrn ) ; return this . Core . GET ( path , params ) ; }
Get all the identifiers or a particular identifier identified by the `identifierUrn` parameter
@param  {String|Integer|undefined} identifierUrn A Robin identifier URN
@param  {Object|undefined}         params        A querystring object
@return {Function}                               A Promise
Get all the identifiers or a particular identifier identified by the identifierUrn parameter