docs: private Fix addDeltaArgument(
        MethodInvocationTree methodInvocationTree, VisitorState state, List<Type> argumentTypes) {
      int insertionIndex = getDeltaInsertionIndex(methodInvocationTree, state);
      String deltaArgument = getDeltaArgument(state, argumentTypes);
      return SuggestedFix.replace(insertionIndex, insertionIndex, deltaArgument);
    }