question: @ Override public boolean isAllowedToTransferFile ( ContactId contact ) throws RemoteException { if ( contact == null ) { throw new ServerApiIllegalArgumentException ( "contact must not be null!" ) ; } try { Capabilities remoteCapabilities = mContactManager . getContactCapabilities ( contact ) ; if ( remoteCapabilities == null ) { if ( sLogger . isActivated ( ) ) { sLogger . debug ( "Cannot transfer file as the capabilities of contact " + contact + " are not known." ) ; } return false ; } FileTransferProtocol protocol = getFileTransferProtocolForOneToOneFileTransfer ( contact ) ; if ( protocol == null ) { if ( sLogger . isActivated ( ) ) { sLogger . debug ( "Cannot transfer file as no valid file transfer protocol could be determined." ) ; } return false ; } MessagingMode mode = mRcsSettings . getMessagingMode ( ) ; switch ( mode ) { case INTEGRATED : case SEAMLESS : if ( ( FileTransferProtocol . MSRP == protocol && mRcsSettings . isFtAlwaysOn ( ) ) || ( FileTransferProtocol . HTTP == protocol && mRcsSettings . isFtHttpCapAlwaysOn ( ) ) ) { break ; } if ( ! mImService . isCapabilitiesValid ( remoteCapabilities ) ) { if ( sLogger . isActivated ( ) ) { sLogger . debug ( "Cannot transfer file as the cached capabilities of contact " + contact + " are not valid anymore for one-to-one communication." ) ; } return false ; } break ; default : break ; } return true ; } catch ( ServerApiBaseException e ) { if ( ! e . shouldNotBeLogged ( ) ) { sLogger . error ( ExceptionUtil . getFullStackTrace ( e ) ) ; } throw e ; } catch ( Exception e ) { sLogger . error ( ExceptionUtil . getFullStackTrace ( e ) ) ; throw new ServerApiGenericException ( e ) ; } }
target:  Returns true if it is possible to initiate file transfer to the contact specified by the contact parameter, else returns false.