Function freya_testing::elements::events::onfiledrop   
pub fn onfiledrop<E, T>(
    _f: impl FnMut(Event<FileData>) -> E + 'static
) -> Attributewhere
    E: EventReturn<T>,pub fn onfiledrop<E, T>(
    _f: impl FnMut(Event<FileData>) -> E + 'static
) -> Attributewhere
    E: EventReturn<T>,