'Set replication factor for an existing file.
This call just updates the value of the replication factor. The actual
block replication is not expected to be performed during this method call.
The blocks will be populated or removed in the background as the result of
the routine block maintenance procedures.
Returns true if successful, false if file does not exist or is a
directory.
Parameters:
- ctx
- path: Path of the file.
- replication: New replication factor.'

def setReplication(self, ctx, path, replication):

    self.send_setReplication(ctx, path, replication)
    return self.recv_setReplication()
