Формат: class | custom | chunk
Значение по умолчанию: class
Примечание: class (default) - match with RegExp /^[...]/i where ... is substituted with the value of filterBy parameter
custom - match with full-fledged RegExp provided with filterBy parameter
chunk - match with full-fledged RegExp privided with a chunk whose name is kept within filterBy parameter
Пример:
&filterMode=``