public CstString getDescriptor() {
    if (descriptor == null) {
      descriptor = new CstString(type.getDescriptor());
    }

    return descriptor;
  }
Gets the type descriptor for this instance.

@return {@code non-null;} the descriptor
android/android_framework/dex-maker/src/main/java/com/android/dx/rop/cst/CstType.java