Move And Rename Method	package createSnapshotCopyOfCurrentINode(currentDir INodeDirectory) : INodeDirectory from class org.apache.hadoop.hdfs.server.namenode.snapshot.INodeDirectoryWithSnapshot.DirectoryDiff to package createSnapshotCopy(currentDir INodeDirectory) : INodeDirectory from class org.apache.hadoop.hdfs.server.namenode.snapshot.INodeDirectoryWithSnapshot.DirectoryDiffFactory