8 string references to 'HeartbeatAccess' in Heartbeat 6.4

connectedheartbeat.inc in modules/friendlist_activity/connectedheartbeat.inc

groupsactivity.inc in modules/og_activity/groupsactivity.inc

membersactivity.inc in modules/og_activity/membersactivity.inc

ogheartbeat.inc in modules/og_activity/ogheartbeat.inc

privateheartbeat.inc in includes/privateheartbeat.inc

publicheartbeat.inc in includes/publicheartbeat.inc

singleheartbeat.inc in includes/singleheartbeat.inc

siteactivity.inc in modules/heartbeat_example/siteactivity.inc