public function setUp()
{
$this->implementation = $this->getObjectForTrait(RestTrait::class);
$this->requestWrapper = $this->prophesize('Google\\Cloud\\RequestWrapper');
$this->requestBuilder = $this->prophesize('Google\\Cloud\\RequestBuilder');
$this->requestBuilder->build(Argument::cetera())->willReturn(new Request('GET', '/someplace'));
}