How to use the @angular/http.Http function in @angular/http

provide: Http, useFactory: (backend, options) => {
            return new Http(backend, options);
          }, deps: [MockBackend, RequestOptions]
        }

export function httpFactory(backend, options): Http {
  return new Http(backend, options);
}

useFactory: (mockBackend, options) => {
                        return new Http(mockBackend, options);
                    },
                    deps: [MockBackend, BaseRequestOptions]

useFactory: (backend: MockBackend, defaultOptions: BaseRequestOptions) => {
            return new Http(backend, defaultOptions);
          },
          deps: [MockBackend, BaseRequestOptions],

useFactory: (mockBackend: MockBackend, defaultOptions: RequestOptions) => {
            return new Http(mockBackend, defaultOptions);
          },
          useClass: Http,

useFactory: function(backend, defaultOptions) {
        return new Http(backend, defaultOptions);
      },
      deps: [MockBackend, BaseRequestOptions]

provide: Http, useFactory: (backend, options) => {
              return new Http(backend, options);
            }, deps: [MockBackend, RequestOptions]
          }

useFactory: (backend: MockBackend, options: BaseRequestOptions) => {
    return new Http(backend, options);
  }
};

useFactory: (backend: MockBackend, options: BaseRequestOptions) => {
        return new Http(backend, options);
      },
      deps: [MockBackend, BaseRequestOptions]

useFactory: (backendInstance: MockBackend, defaultOptions: BaseRequestOptions) => {
            return new Http(backendInstance, defaultOptions);
          }
        },