public CstCallSiteRef addReference() {
    CstCallSiteRef ref = new CstCallSiteRef(this, references.size());
    references.add(ref);
    return ref;
  }
Creates a {@code CstCallSiteRef} that refers to this instance.

@return {@code non-null;} a reference to this instance
android/android_framework/dex-maker/src/main/java/com/android/dx/rop/cst/CstInvokeDynamic.java