@Test
    void mergeEmptyMetadata() throws Exception {
        Metadata metadata = new Metadata();
        assertFalse(metadata.merge(new Metadata()));
    }

    @Test
    void mergeDifferentGAV() throws Exception {
        // merge implicitly assumes that merge is only called on the same GAV and does not perform any validation here!
        Metadata source = new Metadata();
        source.setArtifactId("source-artifact");

	return bits.OnesCount64(uint64(t)) == 1
}

// FromUint64 will set a mask to the uint64 value.
func (t *Mask) FromUint64(m uint64) {
	*t = Mask(m)
}

// Merge will merge other into t.
func (t *Mask) Merge(other Mask) {
	*t |= other
}

// MergeMaskable will merge other into t.
func (t *Mask) MergeMaskable(other Maskable) {
	*t |= Mask(other.Mask())
}

// SetIf will add other if b is true.

import java.util.ArrayList;
import java.util.List;

import org.apache.maven.building.Problem;
import org.apache.maven.toolchain.model.PersistedToolchains;

/**
 * Holds the result of the merged toolchains and holds the problems during this build, if any.
 *
 * @since 3.3.0
 * @deprecated since 4.0.0, use {@code org.apache.maven.api.services.ToolchainsBuilder} instead
 */
@Deprecated(since = "4.0.0")

    }

    @Override
    public void merge(org.apache.maven.repository.legacy.metadata.ArtifactMetadata metadata) {
        // TODO not sure that it should assume this, maybe the calls to addMetadata should pre-merge, then artifact
        // replaces?
        AbstractRepositoryMetadata repoMetadata = (AbstractRepositoryMetadata) metadata;
        this.metadata.merge(repoMetadata.getMetadata());
    }

    @Override

  }

  /** Merges [settings] into this peer's settings and sends them to the remote peer. */
  @Throws(IOException::class)
  fun setSettings(settings: Settings) {
    writer.withLock {
      withLock {
        if (isShutdown) {
          throw ConnectionShutdownException()
        }
        okHttpSettings.merge(settings)
      }
      writer.settings(settings)
    }

        add.forEach((name, node) -> org.merge(name, node, this::merge));
        return org;
    }

    private BuildStep merge(BuildStep node1, BuildStep node2) {
        node1.predecessors.addAll(node2.predecessors);
        node1.successors.addAll(node2.successors);
        node2.mojos.forEach((k, v) -> node1.mojos.merge(k, v, this::mergeMojos));
        return node1;
    }

      pull-requests: write
    runs-on: ubuntu-latest
    steps:
      - name: Check if PRs have merge conflicts
        uses: eps1lon/actions-label-merge-conflict@v3
        with:
          dirtyLabel: "conflicts"
          repoToken: "${{ secrets.GITHUB_TOKEN }}"

    /**
     * Ensures that all list-merge methods are overridden
     */
    @Test
    void testOverriddenMergeMethods() {
        List<String> methodNames = Stream.of(MavenMerger.class.getDeclaredMethods())
                .filter(m -> m.getName().startsWith("merge"))
                .filter(m -> {
                    String baseName = m.getName().substring(5 /* merge */);

        // All overwrite keys should be removed
        assertFalse(dataMap.containsKey("m.overwrite"));
        assertFalse(dataMap.containsKey("n.overwrite"));

        // m and n are updated with overwrite values, p is merged normally
        assertEquals("M1", dataMap.get("m"));
        assertEquals("N1", dataMap.get("n"));
        assertEquals("P1", dataMap.get("p"));
        assertEquals(3, dataMap.size());
    }

    @Test

        repositoryEventDispatcher.dispatch(event.build());
    }

    private void merge(
            Artifact artifact, Map<String, VersionInfo> infos, Versioning versioning, ArtifactRepository repository) {
        if (versioning.getRelease() != null && !versioning.getRelease().isEmpty()) {
            merge(RELEASE, infos, versioning.getLastUpdated(), versioning.getRelease(), repository);
        }