class MetadataGraphEdge {
    String version;
    ArtifactScopeEnum scope;
    int depth = -1;
    int pomOrder = -1;
    boolean resolved = true;
    String artifactUri;

    /**
     * capturing where this link came from
     * and where it is linked to.
     *
     *   In the first implementation only source used for explanatory function
     */
    MetadataGraphVertex source;

    MetadataGraphVertex target;

    // ----------------------------------------------------------------------------
    public MetadataGraphEdge(
            String version, boolean resolved, ArtifactScopeEnum scope, String artifactUri, int depth, int pomOrder) {
        super();
        this.version = version;
        this.scope = scope;
        this.artifactUri = artifactUri;
        this.depth = depth;
        this.resolved = resolved;
        this.pomOrder = pomOrder;
    }
    // ----------------------------------------------------------------------------
    /**
     * helper for equals
     */
    private static boolean objectsEqual(Object o1, Object o2) {<FILL_FUNCTION_BODY>}

    // ----------------------------------------------------------------------------
    /**
     * used to eliminate exact duplicates in the edge list
     */
    @Override
    @SuppressWarnings("checkstyle:equalshashcode")
    public boolean equals(Object o) {
        if (o instanceof MetadataGraphEdge) {
            MetadataGraphEdge e = (MetadataGraphEdge) o;

            return objectsEqual(version, e.version)
                    && ArtifactScopeEnum.checkScope(scope)
                            .getScope()
                            .equals(ArtifactScopeEnum.checkScope(e.scope).getScope())
                    && depth == e.depth;
        }
        return false;
    }

    // ----------------------------------------------------------------------------
    public String getVersion() {
        return version;
    }

    public void setVersion(String version) {
        this.version = version;
    }

    public ArtifactScopeEnum getScope() {
        return scope;
    }

    public void setScope(ArtifactScopeEnum scope) {
        this.scope = scope;
    }

    public int getDepth() {
        return depth;
    }

    public void setDepth(int depth) {
        this.depth = depth;
    }

    public boolean isResolved() {
        return resolved;
    }

    public void setResolved(boolean resolved) {
        this.resolved = resolved;
    }

    public int getPomOrder() {
        return pomOrder;
    }

    public void setPomOrder(int pomOrder) {
        this.pomOrder = pomOrder;
    }

    public String getArtifactUri() {
        return artifactUri;
    }

    public void setArtifactUri(String artifactUri) {
        this.artifactUri = artifactUri;
    }

    public MetadataGraphVertex getSource() {
        return source;
    }

    public void setSource(MetadataGraphVertex source) {
        this.source = source;
    }

    public MetadataGraphVertex getTarget() {
        return target;
    }

    public void setTarget(MetadataGraphVertex target) {
        this.target = target;
    }

    @Override
    public String toString() {
        return "[ " + "FROM:("
                + (source == null ? "no source" : (source.md == null ? "no source MD" : source.md.toString())) + ") "
                + "TO:(" + (target == null ? "no target" : (target.md == null ? "no target MD" : target.md.toString()))
                + ") " + "version=" + version + ", scope=" + (scope == null ? "null" : scope.getScope()) + ", depth="
                + depth + "]";
    }
    // ----------------------------------------------------------------------------
    // ----------------------------------------------------------------------------
}

        if (o1 == null && o2 == null) {
            return true;
        }
        if (o1 == null || o2 == null) {
            return false; // as they are not both null
        }
        return o1.equals(o2);
    
<no_super_class>