Function ruma_state_res::event_auth::can_send_event

pub fn can_send_event<E, F>(event: &Arc<E>, fetch_state: F) -> bool where
    E: Event,
    F: Fn(&EventType, &str) -> Option<Arc<E>>, 

Is the user allowed to send a specific event based on the rooms power levels. Does the event have the correct userId as it’s state_key if it’s not the “” state_key.