Function event_type_value 

pub fn event_type_value(
    type_address: &[u8],
    module: Option<&str>,
    name: Option<&str>,
    instantiation_bcs: Option<&[u8]>,
) -> Vec<u8> 

Build an EventType compound value at the desired specificity. instantiation_bcs is the BCS encoding of Vec<TypeTag>, used only when matching a fully instantiated generic type.