code: public boolean isVariableMapped(String pVarName){
          if(variables == null){
              return false;
          }
          for (Variable vo : variables) {
              if(vo.getName().equals(pVarName)){
                  return true;
              }
          }
          return false;
      }
docs: Checked if the passed in Var Name is mapped to the task
  @param pVarName
  @return boolean results