You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: lib.rs
    path of file: ./repos/nimbus/parachain-template/runtime/src
    
    the code of the file until where you have to start completion: #![cfg_attr(not(feature = "std"), no_std)]
// `construct_runtime!` does a lot of recursion and requires us to increase the limit to 256.
#![recursion_limit = "256"]

// Make the WASM binary available.
#[cfg(feature = "std")]
include!(concat!(env!("OUT_DIR"), "/wasm_binary.rs"));

use smallvec::smallvec
    
		fn can_author(author: NimbusId, slot: u32, parent_header: &<Block as BlockT>::Header) -> bool {
			// This runtime uses an entropy source that is updated during block initialization
			// Therefore we need to initialize it to match the state it will be in when the
			// next block is being executed.
			System::reset_events();
			System::initialize(&(parent_header.number + 1), &parent_header.hash(), &parent_header.digest);
			<Self as pallet_author_slot_filter::Config>::RandomnessSource::on_initialize(System::block_number());

			// And now the actual prediction call
			<AuthorInherent as nimbus_primitives::CanAuthor<_>>::can_author(&author, &slot)
		}