"""
    }

    String generatePomXML(Integer subProjectNumber, DependencyTree dependencyTree) {
        def body = ""
        def isParent = subProjectNumber == null || config.subProjects == 0
        def hasSources = subProjectNumber != null || config.subProjects == 0
        if (isParent) {
            if (config.subProjects != 0) {
                body += """
                    <modules>

        getSignatures().add(signature);
    }

    private void removeSignature(final Buildable source) {
        getSignatures().removeIf(hasSource(source));
    }

    private Predicate<Signature> hasSource(Buildable source) {
        return signature -> signature.getSource().equals(source);
    }

    /**
     * Changes the signatory of the signatures.
     */