def METHOD_NAME(self, vargs):
    """Run Verilator command, check errors"""
    if os.getenv("VERILATOR_ROOT"):
        command = os.getenv("VERILATOR_ROOT") + "/bin/verilator"
    else:
        command = "verilator"
    command += ' ' + ' '.join(vargs)
    if self.debug:
        print("\t%s " % command)
    status = subprocess.call(command, shell=True)
    if status != 0:
        raise Exception("Command failed running Verilator with '" +
                        command + "', stopped")