exNodes = new ArrayList<>(8);
    }

    public MetadataGraphNode(MavenArtifactMetadata metadata) {
        this();
        this.metadata = metadata;
    }

    public MetadataGraphNode addIncident(MetadataGraphNode node) {
        inNodes.add(node);
        return this;
    }

    public MetadataGraphNode addExident(MetadataGraphNode node) {
        exNodes.add(node);
        return this;
    }