if (existing != null) {
                        mergePlugin(existing, element, sourceDominant, context);
                    } else {
                        merged.put(key, element);
                        added.put(key, element);
                    }
                }

                if (!added.isEmpty()) {

    }

    @Override
    public CacheRecord put(Key key, List<Artifact> pluginArtifacts) {
        Objects.requireNonNull(pluginArtifacts, "pluginArtifacts cannot be null");

        assertUniqueKey(key);

        CacheRecord record = new CacheRecord(Collections.unmodifiableList(new ArrayList<>(pluginArtifacts)));

        cache.put(key, record);

        return record;
    }

    TestMap map = new TestMap();
    map.put("foo", 1);
    assertEquals(Integer.valueOf(1), map.putIfAbsent("foo", 2));
    assertEquals(Integer.valueOf(1), map.get("foo"));
    assertThat(map.putIfAbsent("bar", 3)).isNull();
    assertEquals(Integer.valueOf(3), map.get("bar"));
  }

  public void testRemove() {
    TestMap map = new TestMap();
    map.put("foo", 1);
    assertFalse(map.remove("foo", 2));

		b = reedsolomon.AllocAligned(1, bp.wcap)[0][:bp.w]
	}
	return b
}

// Put returns the given Buffer to the BytePool.
func (bp *BytePoolCap) Put(b []byte) {
	if bp == nil {
		return
	}

	if cap(b) != bp.wcap {
		// someone tried to put back buffer which is not part of this buffer pool
		// we simply don't put this back into pool, a modified buffer provided

        CurlResponse response = new CurlResponse();
        Map<String, List<String>> headers = new HashMap<>();
        headers.put("Content-Type", Arrays.asList("application/json"));
        headers.put("CONTENT-LENGTH", Arrays.asList("100"));
        headers.put("accept-encoding", Arrays.asList("gzip"));
        response.setHeaders(headers);

        // All header access should be case-insensitive

  }

  public void testUpdates() {
    cache.put(key, "1");
    // simultaneous update for same key, some null, some non-null
    doParallelCacheOp(
        count,
        n -> {
          cache.asMap().compute(key, (k, v) -> n % 2 == 0 ? v + delimiter + n : null);
        });
    assertThat(cache.size()).isAtMost(1);
  }

  public void testCompute() {
    cache.put(key, "1");
    // simultaneous deletion

        for (int i = 0; i < num; i++) {
            hmap.put(String.valueOf(i), null);
        }
        System.out.println("HashMap.put:" + (System.currentTimeMillis() - start));

        start = System.currentTimeMillis();
        for (int i = 0; i < num; i++) {
            amap.put(String.valueOf(i), null);
        }
        System.out.println("ArrayMap.put:" + (System.currentTimeMillis() - start));

  protected Map<String, Collection<Integer>> makePopulatedMap() {
    TreeMultimap<String, Integer> multimap = createMultimap();
    multimap.put("f", 1);
    multimap.put("f", 2);
    multimap.put("g", 3);
    multimap.put("h", 4);
    return multimap.asMap().subMap("e", "p");
  }

  @Override
  protected String getKeyNotInPopulatedMap() {
    return "a";
  }

  @Override

import com.google.common.collect.testing.features.MapFeature;
import java.util.List;
import java.util.Map.Entry;
import org.junit.Ignore;

/**
 * Testers for {@link ListMultimap#put(Object, Object)}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")

    sublist.clear();
    assertTrue(sublist.isEmpty());
    multimap.put("foo", 6);

    assertThrows(ConcurrentModificationException.class, () -> sublist.isEmpty());
  }

  public void testCreateFromMultimap() {
    Multimap<String, Integer> multimap = create();
    multimap.put("foo", 1);
    multimap.put("foo", 3);
    multimap.put("bar", 2);