@Override
  public void visitGStringExpression(@NotNull GrString gstring) {
    for (GrStringContent part : gstring.getContents()) {
      final String text = part.getText();
      if (!GrStringUtil.parseStringCharacters(text, new StringBuilder(text.length()), null)) {
        myHolder.newAnnotation(HighlightSeverity.ERROR, GroovyBundle.message("illegal.escape.character.in.string.literal")).range(part).create();
        return;
      }
    }

  }
@Override
  public void visitGStringExpression(@NotNull GrString gstring)