code: public Properties load(String name, String includePropertyName) throws InvalidPropertiesFormatException, IOException{
  		return load(name, includePropertyName, null);
  	}
docs: Load properties from resource, with handling of the inclusion.<br>
  从指定的资源中载入properties，处理包含关系。
  @param name	location of the properties file, which can ends with &quot;.*&quot;.<br>
  properties文件的位置，可以以&quot;.*&quot;结尾。
  @param includePropertyName	To override the default inclusion keyword.<br>
  如果不想使用缺省的包含属性关键字，可以在这里指定。
  @return	null if not found, otherwise return the loaded properties
  @throws IOException resource found, but error when reading
  @throws InvalidPropertiesFormatException resource found, but with wrong format