write!(w, "#[no_mangle]\npub extern \"C\" fn {}_hash(o: &{}) -> u64 {{\n", ident, ident).unwrap();
if types.c_type_has_inner_from_path(&resolved_path) {
write!(w, "\tif o.inner.is_null() {{ return 0; }}\n").unwrap();
write!(w, "#[no_mangle]\npub extern \"C\" fn {}_hash(o: &{}) -> u64 {{\n", ident, ident).unwrap();
if types.c_type_has_inner_from_path(&resolved_path) {
write!(w, "\tif o.inner.is_null() {{ return 0; }}\n").unwrap();