If specified then: if 'true' only return actions that have at least one attached event; 'false' only records that do not have any attached events.

Specifies the amount/type of data to be included in the response for a particular arc.

0 :return the action record except customData

1 :as '0' but include customData

Note each of these values represents a different set of data. You can select any or all data for a specific query. So for example a value of (1+2) would return all stored information. Currently only 2 bits are used, this may however be increased in future.

Specifies how to match the 'listeningFor' string against the current listenners:

• 0: (default) - EXACT match - case insensitive
• 1: Wildcard match using SQL 'SIMILAR TO' syntax