@Test
public void getSnapshotImageCountEqualsZero() {

  // Arrange
  SnapshotOuterClass.Snapshot protocolBufferSnapshot = SnapshotOuterClass.Snapshot.getDefaultInstance();
  Path directory = myFileSystem.getPath("");
  // Act
  Object snapshot = myTask.getSnapshot(protocolBufferSnapshot, directory);
  // Assert
  assertNull(snapshot);
}