Retrieves a map of site catalyst events involving page redirects. 

*Example:*
| ${eventsMap}= | Get Map Of Site Catalyst Events From Previous Page |
| ${previousPageclickEventList}= | EL Evaluate | $[map:getObject(var('eventsMap'), 'Event3')] |
| Site Catalyst Variable List Should Contain | ${previousPageclickEventList} | c37=foo |