.contextualLabel("with nested type '" + beanType.getName() + "' is not supported")
                    .documentedAt(userManual("validation_problems", "unsupported_nested_type"))
                    .severity(WARNING)
                    .details(reason)
                    .solution("Use a different input annotation if type is not a bean")

            "Type 'CustomTask' property 'my$type' with nested type '$className' is not supported. " +
                "Reason: $reason",
            'validation_problems',
            'unsupported_nested_type')

        expect:
        succeeds("customTask")

        where:
        type       | parameterType      | producer                                         | className               | reason

        assertValidationFailsWith([
            warning(nestedTypeUnsupportedConfig { type("MyTask").property("my$typeName").annotatedType(className).reason(reason) },
                'validation_problems', 'unsupported_nested_type'),
        ])

        and:
        verifyAll(receivedProblem) {
            fqid == 'validation:property-validation:nested-type-unsupported'

To fix this problem, change the type of the key to `Enum`, `Integer`, or `String`.

[[unsupported_nested_type]]
== Unsupported nested type

This error indicates that an unsupported type is annotated as nested.

    }

    NestedTypeUnsupported nestedTypeUnsupportedConfig(@DelegatesTo(value = NestedTypeUnsupported, strategy = Closure.DELEGATE_FIRST) Closure<?> spec) {
        def config = display(NestedTypeUnsupported, "unsupported_nested_type", spec)
        config.description("with nested type '${config.annotatedType}' is not supported.")
            .solution("Use a different input annotation if type is not a bean.")