requirePromise = function(name) {
      var Promise = getPromise();

      if (!Promise) {
        throw new Error(
          name +
            ' requires global Promise, or `Promise` configured with `jasmine.getEnv().configure()`'
        );
      }

      return Promise;
    }
Get the identifying information for the spy.
@name SpyStrategy#identity
@since 3.0.0
@member
@type {String}