Can't set LockManager for FTP Polling component

LockManager property for FTP Poller does not have a method to set the property. When try to set LockManager property in xbean file get this error:
Initialization of bean failed; nested exception is org.springframework.beans.InvalidPropertyException: Invalid property 'lockManager' of bean class [org.apache.servicemix.ftp.FtpPollerEndpoint]: No property 'lockManager' found