storage/StorageReference/ViewController.m [159:173]:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    if (error != nil) {
      // Uh-oh, an error occurred!
    } else {
      // Metadata contains file metadata such as size, content-type, and download URL.
      int size = metadata.size;
      // You can also access to download URL after upload.
      [riversRef downloadURLWithCompletion:^(NSURL * _Nullable URL, NSError * _Nullable error) {
        if (error != nil) {
          // Uh-oh, an error occurred!
        } else {
          NSURL *downloadURL = URL;
        }
      }];
    }
  }];
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -



storage/StorageReference/ViewController.m [189:203]:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    if (error != nil) {
      // Uh-oh, an error occurred!
    } else {
      // Metadata contains file metadata such as size, content-type, and download URL.
      int size = metadata.size;
      // You can also access to download URL after upload.
      [riversRef downloadURLWithCompletion:^(NSURL * _Nullable URL, NSError * _Nullable error) {
        if (error != nil) {
          // Uh-oh, an error occurred!
        } else {
          NSURL *downloadURL = URL;
        }
      }];
    }
  }];
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -



