https://github.com/spring-projects/spring-graphql
    https://www.graphql-java.com/
    https://github.com/graphql-java/graphql-java-spring

https://github.com/spring-projects/spring-graphql/tree/main/samples
https://github.com/spring-projects/spring-graphql/tree/main/spring-graphql-docs/src/docs/asciidoc

https://docs.spring.io/spring-graphql/docs/current-SNAPSHOT/reference/html/
https://docs.spring.io/spring-graphql/docs/current-SNAPSHOT/api/
https://docs.spring.io/spring-graphql/docs/1.0.0-M5/reference/html/

2021
https://spring.io/blog/2021/07/06/introducing-spring-graphql
    https://habr.com/ru/company/otus/blog/576968/
https://spring.io/blog/2021/07/06/hello-spring-graphql