code: public LocalVariable createLocalParameter(String name, TypeDesc type) {
          LocalVariable var = new LocalVariableImpl
              (mLocalVariables.size(), name, type, mNextFixedVariableNumber);
          mLocalVariables.add(var);
          mNextFixedVariableNumber += type.isDoubleWord() ? 2 : 1;
          return var;
      }
docs: All parameters must be defined before adding instructions.