//! Provides GraphQLType implementations for some external types
/// GraphQL support for [chrono](https://github.com/chronotope/chrono) types.
/// GraphQL support for [chrono-tz](https://github.com/chronotope/chrono-tz) types.
/// GraphQL support for [url](https://github.com/servo/rust-url) types.
/// GraphQL support for [uuid](https://doc.rust-lang.org/uuid/uuid/struct.Uuid.html) types.
/// GraphQL support for [bson](https://github.com/mongodb/bson-rust) types.