w3tc_purge_all_wpcron

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See this hook used in plugins:

Select Pluginw3-total-cache.2.8.0w3-total-cache.2.8.2w3-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