docs: public void startMethod(String methodName, String type, short flags) {
          short methodNameIndex = itsConstantPool.addUtf8(methodName);
          short typeIndex = itsConstantPool.addUtf8(type);
          itsCurrentMethod = new ClassFileMethod(methodName, methodNameIndex,
              type, typeIndex, flags);
          itsJumpFroms = new UintMap();
          itsMethods.add(itsCurrentMethod);
          addSuperBlockStart(0);
      }