question: public final void log ( String filename , int lineNumber , String method , String tag , int level , String message ) { final LogMessage lm = new LogMessage ( LogMessage . LOGMSG_TYPE_LOG , nextSequenceNumber . getAndIncrement ( ) ) ; lm . addInt16 ( level , LogMessage . PART_KEY_LEVEL ) ; if ( filename != null ) { lm . addString ( filename , LogMessage . PART_KEY_FILENAME ) ; if ( lineNumber != 0 ) lm . addInt32 ( lineNumber , LogMessage . PART_KEY_LINENUMBER ) ; } if ( method != null ) lm . addString ( method , LogMessage . PART_KEY_FUNCTIONNAME ) ; if ( tag != null && ! tag . isEmpty ( ) ) lm . addString ( tag , LogMessage . PART_KEY_TAG ) ; lm . addString ( message , LogMessage . PART_KEY_MESSAGE ) ; log ( lm ) ; }
target:  Log a message with full information (if provided)