protected List < String > checkSetup ( ) { List < String > messages = new ArrayList <> ( ) ; if ( command == null ) { messages . add ( coreBundle . getString ( "command.not.passed" ) ) ; } else if ( ! isCommand ( command ) ) { messages . add ( String . format ( coreBundle . getString ( "command.unknown" ) , command ) ) ; } else { if ( StringUtil . trimToNull ( url ) == null ) { messages . add ( String . format ( coreBundle . getString ( "option.required" ) , "--" + OPTIONS . URL ) ) ; } if ( isChangeLogRequired ( command ) && ( StringUtil . trimToNull ( changeLogFile ) == null ) ) { messages . add ( String . format ( coreBundle . getString ( "option.required" ) , "--" + OPTIONS . CHANGELOG_FILE ) ) ; } if ( isNoArgCommand ( command ) && ! commandParams . isEmpty ( ) ) { messages . add ( coreBundle . getString ( ERRORMSG_UNEXPECTED_PARAMETERS ) + commandParams ) ; } else { validateCommandParameters ( messages ) ; } } return messages ; }
After parsing checks if the given combination of main command and can be executed .