@Override
  public int compareTo(MethodHandle o) {
    if (methodHandleType != o.methodHandleType) {
      return methodHandleType.compareTo(o.methodHandleType);
    }
    return Unsigned.compare(fieldOrMethodId, o.fieldOrMethodId);
  }
A method_handle_item:
https://source.android.com/devices/tech/dalvik/dex-format#method-handle-item
android/android_framework/dex-maker/src/main/java/com/android/dex/MethodHandle.java