public void addParam(ModelParam param){
  if (param != null) {
    contextInfo.put(param.name,param);
    contextParamList.add(param);
  }
}

public void addParam ( ModelParam param ) { if ( param != null ) { contextInfo . put ( param . name , param ) ; contextParamList . add ( param ) ; } }
adds a parameter definition to this service ; puts on list in order added then sorts by order if specified .
