public RopMethod withRegisterOffset(int delta) {
    RopMethod result = new RopMethod(blocks.withRegisterOffset(delta), firstLabel);

    if (exitPredecessors != null) {
      /*
       * The predecessors have been calculated. It's safe to
       * inject these into the new instance, since the
       * transformation being applied doesn't affect the
       * predecessors.
       */
      result.exitPredecessors = exitPredecessors;
      result.predecessors = predecessors;
    }

    return result;
  }
Returns an instance that is identical to this one, except that the registers in each
instruction are offset by the given amount.

@param delta the amount to offset register numbers by
@return {@code non-null;} an appropriately-constructed instance
android/android_framework/dex-maker/src/main/java/com/android/dx/rop/code/RopMethod.java