Function initialize_staged 

pub async fn initialize_staged(
    component_stage1: &[u8],
    component_stage2_and_map_module_index: Option<(&[u8], &dyn Fn(u32) -> u32)>,
    initialize: impl FnOnce(Vec<u8>) -> BoxFuture<'static, Result<Box<dyn Invoker>>>,
) -> Result<Vec<u8>>