w3tc_ajax_exit_survey_render

See hook in action

See this hook used in plugins:

Select Pluginw3-total-cache.2.8.6w3-total-cache.2.8.7w3-total-cache.2.8.8w3-total-cache.2.8.9w3-total-cache.2.8.10w3-total-cache.2.8.11w3-total-cache.2.8.12