question: indicates whether the given commandhandler is subscribed to this command bus . concode_field_sep CallbackBehavior callbackBehavior concode_elem_sep List<CommandMessage<?>> dispatchedCommands concode_elem_sep ConcurrentMap<String,CommandHandler<?>> subscriptions concode_field_sep void clearCommands concode_elem_sep void clearSubscriptions concode_elem_sep void dispatch concode_elem_sep void dispatch concode_elem_sep Map<String,CommandHandler<?>> getSubscriptions concode_elem_sep List<CommandMessage<?>> getDispatchedCommands concode_elem_sep void subscribe concode_elem_sep boolean unsubscribe concode_elem_sep void setCallbackBehavior
target: boolean function ( CommandHandler < ? > arg0 ) { return subscriptions . containsValue ( arg0 ) ; }