public int adjustType(int typeIndex) {
    return (typeIndex == ClassDef.NO_INDEX) ? ClassDef.NO_INDEX : (typeIds[typeIndex] & 0xffff);
  }
Maps the index offsets from one dex file to those in another. For example, if you have string #5
in the old dex file, its position in the new dex file is {@code strings[5]}.
android/android_framework/dex-maker/src/main/java/com/android/dx/merge/IndexMap.java