jodd-petite/src/main/java/jodd/petite/resolver/ReferencesResolver.java
private String readAnnotationValue(final PetiteInject annotation) {
		String value = annotation.value().trim();

		if (value.isEmpty()) {
			return null;
		}
		return value;
	}
private String readAnnotationValue(final PetiteInject annotation) {
		String value = annotation.value().trim();

		if (value.isEmpty()) {
			return null;
		}
		return value;
	}
Reads annotation value and returns {@code null} if value is empty.