Request object to use with GMSPlacesClient to fetch a photo.
Parameters:
photoMetadata
GMSPlacePhotoMetadata The maximum desired size in pixels of the image returned by the Place Photos service.
maxSize
CGSize The photo metadata to request. If the image is smaller than the values specified, the original image will be returned. If the image is larger in either dimension, it will be scaled to match the smaller of the two dimensions, restricted to its original aspect ratio. CGSize height and width should be set to an integer between 1 and 4800. If not, the GMSPlacesClient request callback will return an error.
