> Then user can change the variable with command line option like
> ./megframework -m -t 2;
> 
> Then builder creates new method.
> (Bool_t) MEGAnalyzer::GetisMC()
> (Int_t) MEGAnalyzer::GetTriggerType()

I realized better way. In this way users can add or remove command line options without changing their
task files. And it is not necessary to add new object in ROME.

What I propose is to make it in steering parameter. That is <SPCOmmandOption> in steering parameter's
properties.

  <SteeringParameterField>
    <SPFieldName>isMC</SPFieldName>
    <SPFieldType>Bool_t</SPFieldType>
    <SPCommandOption>m</SPCommandOption>
  </SteeringParameterField>
  <SteeringParameterField>
    <SPFieldName>TriggerType</SPFieldName>
    <SPFieldType>Int_t</SPFieldType>
    <SPCommandOption>t</SPCommandOption>
  </SteeringParameterField>

Then user can change the variable with command line option like
./megframework -m -t 2;
when -m is typed, isMC becomes true.
Trigger type will be 2.

They can specify the value both with config file and command line option just same as run numbers.
Values in config file will be overwritten by command line option.