@Override
  public Type getType() {
    return Type.STRING;
  }
Gets the size of this instance as UTF-16 code points. That is, get the number of 16-bit chars
in the UTF-16 encoding of this instance. This is the same as the {@code length} of the Java
{@code String} representation of this instance.

@return {@code >= 0;} the UTF-16 size
android/android_framework/dex-maker/src/main/java/com/android/dx/rop/cst/CstString.java