current jgiven versions do not work well with multiple stages

[adrian-herscu]

Current State
Scenario classes have to extend with many generic types:

extends ApplicationPerMethodWebSessionTest<TestConfiguration, GoogleFixtures<?>, GoogleActions<?>, GoogleVerifications<?>>

and additional stages can be added via annotated fields or direct calls.
Annotated fields do not work with TestNG parallel modes.
Direct calls require boilder-plate like:

    protected SomeElasticSearchVerifications<?> elasticSearchVerifications() {
        val s = addStage(SomeElasticSearchVerifications.class);
        s.beforeScenarioConfigurePolling();
        return s;

Note the direct call to beforeScenarioConfigurePolling -- all JGiven annotations are not activated when stages are directly called.

How to make it better
Reusing stages should be like this:

extends ApplicationPerMethodWebSessionTest<TestConfiguration>

and then calling steps:

given(SomeFixtures.class)
  .some_step();
when(SomeActions.class)...
then(SomeVerifications.class)...

[adrian-herscu]

TNG/JGiven#1469