package org.apache.maven.artifact.resolver;
import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.ArtifactComponentTestCase;
<BUG>import org.apache.maven.artifact.metadata.ArtifactMetadataSource;
import org.apache.maven.artifact.repository.ArtifactRepository;</BUG>
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;

package org.apache.maven.artifact.resolver;
import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.ArtifactComponentTestCase;
import org.apache.maven.artifact.metadata.ArtifactMetadataSource;
import org.apache.maven.artifact.metadata.ResolutionGroup;
import org.apache.maven.artifact.repository.ArtifactRepository;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
