code: public static Object getAs(Map<String,Object> properties, String strKey, Class<?> classData)
      {
          return Utility.getAs(properties, strKey, classData, null);
      }
docs: Get this property from the map and convert it to the target class.
  @param properties The map object to get the property from.
  @param strKey The key of the property.
  @param classData The target class to convert the property to.
  @return The data in the correct class.