.filter(Objects::nonNull)
                .findFirst()
                .orElseGet(() -> doLocateExistingPom(projectDirectory));
        if (pom != null && !pom.equals(projectDirectory) && !pom.getParent().equals(projectDirectory)) {
            throw new IllegalArgumentException("The POM found does not belong to the given directory: " + pom);
        }
        return pom;
    }

    @Override