}

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        DefaultArtifactCoordinate that = (DefaultArtifactCoordinate) o;
        return Objects.equals(this.getGroupId(), that.getGroupId())
                && Objects.equals(this.getArtifactId(), that.getArtifactId())

        requireNonNull(context, "context cannot be null");
        return this;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        } else if (null == obj || !getClass().equals(obj.getClass())) {
            return false;
        }
        return true;
    }

    @Override
    public int hashCode() {

            throws ArtifactResolutionException, ArtifactNotFoundException {
        if (Artifact.LATEST_VERSION.equals(artifact.getVersion())) {
            try {
                String version = resolveVersion(artifact, request);
                if (Artifact.LATEST_VERSION.equals(version)) {
                    throw new ArtifactNotFoundException("Unable to determine the latest version", artifact);
                }

        }

        @Override
        public boolean equals(Object o) {
            if (this == o) {
                return true;
            }
            if (o == null || getClass() != o.getClass()) {
                return false;
            }
            Key<?> key = (Key<?>) o;
            return Objects.equals(id, key.id) && Objects.equals(type, key.type);
        }

        @Override

            if (parser.nextTag() == XMLStreamReader.START_ELEMENT
                    && parser.getLocalName().equals("project")) {
                for (int i = 0; i < parser.getAttributeCount(); i++) {
                    if ("root".equals(parser.getAttributeLocalName(i))) {
                        return Boolean.parseBoolean(parser.getAttributeValue(i));
                    }
                }

            this.properties = properties;
        }

        @Override
        public Object getValue(String expression) {
            if ("build.timestamp".equals(expression) || "maven.build.timestamp".equals(expression)) {
                return new MavenBuildTimestamp(startTime, properties).formattedTimestamp();
            }
            return null;
        }
    }

    @Nonnull
    @Override
    public ArtifactCoordinate toCoordinate() {
        return session.createArtifactCoordinate(this);
    }

    @Override
    public boolean equals(Object o) {
        return o instanceof Artifact && Objects.equals(key(), ((Artifact) o).key());
    }

    @Override
    public int hashCode() {
        return key.hashCode();
    }

    @Override
    public String toString() {

        this.type = type;
    }

    public boolean include(Artifact artifact) {
        return type.equals(artifact.getType());
    }

    @Override
    public int hashCode() {
        int hash = 17;
        hash = hash * 31 + type.hashCode();
        return hash;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }

    /**
     * helper for equals
     */
    private static boolean objectsEqual(Object o1, Object o2) {
        if (o1 == null && o2 == null) {
            return true;
        }
        if (o1 == null || o2 == null) {
            return false; // as they are not both null
        }
        return o1.equals(o2);
    }

        c.addDependency(dFarthest);

        /* system and provided dependencies are not transitive */
        if (!Artifact.SCOPE_SYSTEM.equals(nearestScope) && !Artifact.SCOPE_PROVIDED.equals(nearestScope)) {
            checkScopeUpdate(a, b, expectedScope, "2.0");
        }
    }

    private void checkScopeUpdateDirect(String farthestScope, String nearestScope, String expectedScope)