@Override
      public boolean execute(final @NotNull PsiElement element) {
        if (element instanceof XmlEntityDecl xmlEntityDecl) {
          if (xmlEntityDecl.isInternalReference() || acceptSystemEntities) {
            final LookupElementBuilder _item = buildEntityLookupItem(xmlEntityDecl);
            if (_item != null) {
              resultSet.addElement(_item);
              resultSet.stopHere();
            }
          }
        }
        return true;
      }
@Override
      public boolean execute(final @NotNull PsiElement element)