this.treeRoot = root;
    }
    // ----------------------------------------------------------------------------
    public MetadataTreeNode getTree() {
        return treeRoot;
    }
    // ----------------------------------------------------------------------------
    public void setTree(MetadataTreeNode root) {
        this.treeRoot = root;
    }

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;

@PlexusTest
class DefaultMavenExecutionRequestPopulatorTest {
    @Inject
    MavenExecutionRequestPopulator testee;

    @Test
    void testPluginRepositoryInjection() throws Exception {
        MavenExecutionRequest request = new DefaultMavenExecutionRequest();

        Repository r = new Repository();
        r.setId("test");