public void writeTo(Section out) {
    out.writeUnsignedShort(methodHandleType.value);
    out.writeUnsignedShort(unused1);
    out.writeUnsignedShort(fieldOrMethodId);
    out.writeUnsignedShort(unused2);
  }
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