public <A extends Annotation> A getContainerItemAnnotation(Class<A> annotationClass) {
        return this.getContainerItemAnnotation(annotationClass, TypeContext.IGNORE_ANNOTATIONS_ON_ANNOTATIONS);
    }
Return the annotation of the given type on the member's container item (i.e. first type parameter if there is one), if such an annotation is
present on either the field or its getter.

@param <A> type of annotation
@param annotationClass type of annotation
@return annotation instance (or {@code null} if no annotation of the given type is present)
jsonschema-generator/src/main/java/com/github/victools/jsonschema/generator/MemberScope.java