@Override
  public XsltVariable @NotNull [] getVariables() {
    return convertArray(ResolveUtil.collect(new ParamMatcher(getTag(), null) {
      @Override
      protected boolean isApplicable(XmlTag tag) {
        return XsltSupport.isVariable(tag);
      }
    }), XsltVariable.class);
  }
@Override
  public XsltVariable @NotNull [] getVariables()