if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        DefaultArtifact that = (DefaultArtifact) o;
        return Objects.equals(groupId, that.groupId)
                && Objects.equals(artifactId, that.artifactId)
                && Objects.equals(type, that.type)

import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.WeakHashMap;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.DefaultArtifact;

/**
 * Construct a version range from a specification.
 *
 */
public class VersionRange {
    private static final Map<String, VersionRange> CACHE_SPEC = Collections.synchronizedMap(new WeakHashMap<>());