public static String unescapeIdentifier(String identifier)
  {
    return ESCAPE_CHAR_PATTERN.matcher(identifier).replaceAll("");
  }
@Test
  public void testUnescapeIdentifier()
  {
    assertEquals(PdlParseUtils.unescapeIdentifier("`record`"), "record");
    assertEquals(PdlParseUtils.unescapeIdentifier("notEscaped"), "notEscaped");
  }