public static String escapeIdentifier(String identifier) {
    return '`' + identifier.replace("`", "``") + '`';
  }
@Test
  public void testEscapeIdentifierWithSpecialCharacters() {
    assertEquals(
        "`a````sdasd`` asd`` ad```", SingleStoreUtil.escapeIdentifier("a``sdasd` asd` ad`"));
  }