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In order to make it as easy as possible for Fluid component authors to define their event types and accept and manage listeners, Fluid event firers have a special status during the Fluid options merging process.
events in options
A component may declare as part of its options structure, a top-level structure named events whose keys correspond to event types that this component wishes to support, and whose values are either null or the string values "unicast" or "preventable" corresponding to the accepted arguments for getEventFirer. As part of the normal construction process of fluid.initView(), the top-level that object for the component will automatically have constructed a corresponding event firer object for each one of these events.
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