code: @Nullable
    public static Fix addSuppressWarnings(VisitorState state, String warningToSuppress) {
      return addSuppressWarnings(state, warningToSuppress, null);
    }
docs: Returns a fix that adds a {@code @SuppressWarnings(warningToSuppress)} to the closest
  suppressible element to the node pointed at by {@code state.getPath()}.
  
  @see #addSuppressWarnings(VisitorState, String, String)