public @NonNull OptionalSubject parsedValue() {
        if (this.actual == null) {
            this.failWithActual(Fact.simpleFact("expected to not be null"));
        }
        return this.check("parsedValue()").about(OptionalSubject.optionals()).that(this.actual.parsedValue());
    }
Truth subject used to simplify testing {@link ArgumentParseResult argument parse results}.

@param <T> type of the parsed values
cloud-core/src/test/java/org/incendo/cloud/truth/ArgumentParseResultSubject.java