code: public static String getIfCacheNotNull(EntityColumn column, String contents) {
          StringBuilder sql = new StringBuilder();
          sql.append("<if test=\"").append(column.getProperty()).append("_cache != null\">");
          sql.append(contents);
          sql.append("</if>");
          return sql.toString();
      }
docs: <bind name="pattern" value="'%' + _parameter.getTitle() + '%'" />
  
  @param column
  @return