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pub(crate) fn generate(
	mut writer: impl std::io::Write,
	type_name: &str,
	generics: super::Generics<'_>,
	crate_root: &str,
	resource_metadata: &super::ResourceMetadata<'_>,
) -> Result<(), crate::Error> {
	if let Some(metadata_ty) = &resource_metadata.metadata_ty {
		let type_generics_impl = generics.type_part.map(|part| format!("<{}>", part)).unwrap_or_default();
		let type_generics_type = generics.type_part.map(|part| format!("<{}>", part)).unwrap_or_default();
		let type_generics_where = generics.where_part.map(|part| format!(" where {}", part)).unwrap_or_default();

		writeln!(
			writer,
			include_str!(concat!(env!("CARGO_MANIFEST_DIR"), "/templates/impl_metadata.rs")),
			crate_root = crate_root,
			type_name = type_name,
			type_generics_impl = type_generics_impl,
			type_generics_type = type_generics_type,
			type_generics_where = type_generics_where,
			metadata_type_name = metadata_ty.0,
			metadata_expr = if metadata_ty.1 { "Some(&self.metadata)" } else { "self.metadata.as_ref()" },
		)?;
	}

	Ok(())
}