Function event_level 

pub fn event_level(
    power_levels: &Value,
    event_type: &str,
    is_state: bool,
) -> i64

The power level required to send an event of event_type: power_levels.events[event_type] if present, else state_default (Matrix default 50) for a state event or events_default (Matrix default 0) for a timeline event.