action.execute(mergeSpec);
        return this;
    }

    @Override
    public DefaultManifest getEffectiveManifest() {
        return getEffectiveManifestInternal(this);
    }

    protected DefaultManifest getEffectiveManifestInternal(DefaultManifest baseManifest) {
        DefaultManifest resultManifest = baseManifest;
        for (ManifestMergeSpec manifestMergeSpec : manifestMergeSpecs) {