Dependency target, Dependency source, boolean sourceDominant, Map<Object, Object> context) {
        String src = source.getClassifier();
        if (src != null) {
            if (sourceDominant || target.getClassifier() == null) {
                target.setClassifier(src);
                target.setLocation("classifier", source.getLocation("classifier"));
            }
        }
    }

            } else if (!a.getType().equals(getType())) {
                return false;
            } else {
                return a.getClassifier() == null
                        ? getClassifier() == null
                        : a.getClassifier().equals(getClassifier());
            }
        } else {
            return false;
        }
    }

                + ":" + artifact.getArtifactId()
                + ":" + artifact.getArtifactHandler().getExtension()
                + (artifact.getClassifier() == null || artifact.getClassifier().isEmpty()
                        ? ""
                        : ":" + artifact.getClassifier())
                + ":" + artifact.getVersion();
    }

    private String id(Artifact artifact) {
        return artifact.key();
    }

        return artifact.getArtifactId();
    }

    @Override
    public String getType() {
        return artifact.getExtension();
    }

    @Override
    public String getClassifier() {
        return artifact.getClassifier();
    }

    @Override
    public String getVersion() {
        return artifact.getBaseVersion();
    }

    @Override
    public File getFile() {

    /**
     * Returns the classifier of the artifact.
     *
     * @return the classifier or an empty string if none, never {@code null}
     * @see ArtifactCoordinates#getClassifier()
     */
    @Nonnull
    String getClassifier();

    /**
     * Returns the file extension of the artifact.
     * The dot separator is not included in the returned string.
     *

                    if (classifier == null) {
                        if (a.getClassifier() != null) {
                            result = 1;
                        }
                    } else {
                        if (a.getClassifier() != null) {
                            result = classifier.compareTo(a.getClassifier());
                        } else {
                            result = -1;

                return dependency.getArtifactId();
            }

            @Override
            public String getClassifier() {
                String classifier = dependency.getClassifier();
                if (classifier == null || classifier.isEmpty()) {
                    classifier = getType().getClassifier();
                    if (classifier == null) {
                        classifier = "";
                    }

        }

        @Override
        public String getExtension() {
            return type.getExtension();
        }

        @Override
        public String getClassifier() {
            return type.getClassifier() == null ? "" : type.getClassifier();
        }

        @Override
        public Map<String, String> getProperties() {
            return type.getProperties();
        }
    }

            if ("pom".equals(artifact.getExtension()) || artifact.getExtension().startsWith("pom.")) {
                if (CONSUMER_POM_CLASSIFIER.equals(artifact.getClassifier())) {
                    consumers.add(artifact);
                } else if ("".equals(artifact.getClassifier())) {
                    mains.add(artifact);
                }
            }
        }
        if (!mains.isEmpty() && !consumers.isEmpty()) {

            return artifactId;
        } else {
            return artifact.getArtifactId();
        }
    }

    @Override
    public String getClassifier() {
        if (classifier != null) {
            return classifier;
        } else {
            return artifact.getClassifier();
        }
    }

    @Override
    public String getExtension() {
        if (extension != null) {
            return extension;