Check introspection is on the TODO list
Here are the next tasks listed, as a TODO list:
* Builder.withInputParameter(InputParameter) to be replaced by Builder.withInputParameter(String, String, boolean)
+* Check support for introspection
* Add a sample with graphQLScalarTypeGetter
* Check InputObjectType with fields that are lists
* Manage directives (https://www.apollographql.com/docs/graphql-tools/schema-directives/)
