event_set deprecated

[stockxiay]

in libevnt v2.x
/**
Prepare an event structure to be added.

@deprecated event_set() is not recommended for new code, because it requires
a subsequent call to event_base_set() to be safe under most circumstances.
Use event_assign() or event_new() instead.
*/
EVENT2_EXPORT_SYMBOL
void event_set(struct event , evutil_socket_t, short, void ()(evutil_socket_t, short, void *), void *);

but folly/io/async/EventBaseBackendBase.h L185 call it ? Can event_assign be used？