public synchronized FileSystem getFileSystemClient() {
    Preconditions.checkState(mState == State.STARTED,
        "must be in the started state to create an fs client, but state was %s", mState);

    return Factory.create(getFilesystemContext());
  }
public synchronized FileSystem getFileSystemClient ( ) { Preconditions . checkState ( mState == State . STARTED , "must be in the started state to create an fs client, but state was %s" , mState ) ; return Factory . create ( getFilesystemContext ( ) ) ; }
@return a client for interacting with the cluster