code: @Override
  	public String escapeLikePattern(final CharSequence pattern) {
  		if (pattern == null) {
  			return null;
  		}
  		Matcher matcher = escapePattern.matcher(pattern);
  		return matcher.replaceAll(Matcher.quoteReplacement(String.valueOf(escapeChar)) + "$0");
  	}
docs: {@inheritDoc}
  
  @see jp.co.future.uroborosql.dialect.Dialect#escapeLikePattern(java.lang.CharSequence)