http://tutorials.jenkov.com/java-reflection/generics.html

https://github.com/jhalterman/typetools

https://github.com/FasterXML/java-classmate
http://fasterxml.github.io/java-classmate/javadoc/1.3/

2009
https://habr.com/ru/post/66593/

obtain generic type names
https://stackoverflow.com/questions/19906614/how-to-get-generic-return-type-of-a-method-using-reflections
https://stackoverflow.com/questions/3403909/get-generic-type-of-class-at-runtime

samples
    Type returnType = method.getGenericReturnType();
    System.out.println("method.getGenericReturnType(): " + returnType);

    if (returnType instanceof ParameterizedType) {
        ParameterizedType paramType = (ParameterizedType) returnType;
        Type[] argTypes = paramType.getActualTypeArguments();
        if (argTypes.length > 0) {
            System.out.println("Generic type is " + argTypes[0]);
        }
    }