Sometimes there is a need to save JSON to the database and return the result as JSON and not as a string
Base on article: https://vladmihalcea.com/how-to-map-json-objects-using-generic-hibernate-types/
For main and test dirs:
cp application.properties.dist application.properties
Code in dir: /src/main/java/hello/json
See example use: /src/main/java/hello/entity/customField/Employee.java
see: /src/test/java/hello/controller/customField/EmployeeControllerTest.java