code: @Override
      public boolean removeAll(java.util.Collection<?> c) {
          boolean ret = super.removeAll(c);
          checkResetEntityLocks();
          return ret;
      }
docs: Removes all elements of the specified collection from the batch operation.
  
  @param c
  The collection of elements to remove from the batch operation.
  @return
  <code>true</code> if the objects in the collection were removed successfully.