question: public static ParameterType makeFileParameterType ( ParameterHandler parameterHandler , String parameterName , String description , PortProvider portProvider , String ... fileExtensions ) { return makeFileParameterType ( parameterHandler , parameterName , description , portProvider , false , fileExtensions ) ; }
target:  Creates the file parameter named by fileParameterName that depends on whether or not the port returned by the given PortProvider is connected.