shutdowns this queue . concode_field_sep Map<WebAsyncTree,AsyncTreeQueue> queues concode_elem_sep int threadsAmount concode_elem_sep boolean separateLimitForEachTree concode_elem_sep Object lock concode_elem_sep ExecutorService executorService concode_field_sep void setMaximumThreadsAmount concode_elem_sep void setMaximumThreadsAmount concode_elem_sep AsyncTreeQueue getInstance concode_elem_sep void execute concode_elem_sep void execute concode_elem_sep AsyncTreeQueue getInstanceImpl concode_elem_sep void shutdownAllQueues
void function ( ) { synchronized ( lock ) { if ( executorService != null ) { executorService . shutdown ( ) ; } } }