Linkage Error found while exposing getNotification in storage.

[athakor]

Build failed of storage -138 due to linkage error :

SEVERE: Newly introduced problem:
(google-cloud-nio-0.120.0-alpha.jar) com.google.cloud.storage.contrib.nio.testing.FakeStorageRpc's method getNotification(String arg1, String arg2) is not implemented in the class
  referenced from com.google.cloud.storage.spi.v1.StorageRpc (google-cloud-storage-1.104.0.jar)

Solution:

java-storage-nio/google-cloud-nio/src/main/java/com/google/cloud/storage/contrib/nio/testing/FakeStorageRpc.java

Lines 632 to 644 in df030b8

	public boolean deleteNotification(String bucket, String notification) {
	throw new UnsupportedOperationException();
	}
	@Override
	public List<Notification> listNotifications(String bucket) {
	throw new UnsupportedOperationException();
	}
	@Override
	public Notification createNotification(String bucket, Notification notification) {
	throw new UnsupportedOperationException();
	}

We have to override getNotification method in FakeStorageRpc.java once storage - 138 gets merged.

  @Override
  public Notification getNotification(String bucket, String notification){
    throw new UnsupportedOperationException();
  }

[frankyn]

Addressed in #135