originalObj:
      listKey: []
    expectedWithNull: {}
    expectedWithoutNull:
      listKey: []
  - description: list of primitives
    originalObj:
      listKey:
      - 1
      - 2
    expectedWithNull: {}
    expectedWithoutNull:
      listKey:
      - 1
      - 2
  - description: list of maps
    originalObj:
      listKey:
      - k1: v1
      - k2: null

                    }

                    @Override
                    public HostKey[] getHostKey() {
                        throw new UnsupportedOperationException();
                    }

                    @Override
                    public HostKey[] getHostKey(String host, String type) {
                        return new HostKey[0];
                    }
                });
            }

	PermitAddressSharing bool
}

type CertKey struct {
	// CertFile is a file containing a PEM-encoded certificate, and possibly the complete certificate chain
	CertFile string
	// KeyFile is a file containing a PEM-encoded private key for the certificate specified by CertFile
	KeyFile string
}

type GeneratableKeyCert struct {
	// CertKey allows setting an explicit cert/key file to use.
	CertKey CertKey

	testFe = make([]float32, 256)

	q := ve / math.Exp(-de)
	testKe[0] = uint32((de / q) * m2)
	testKe[1] = 0
	testWe[0] = float32(q / m2)
	testWe[255] = float32(de / m2)
	testFe[0] = 1.0
	testFe[255] = float32(math.Exp(-de))
	for i := 254; i >= 1; i-- {
		de = -math.Log(ve/de + math.Exp(-de))
		testKe[i+1] = uint32((de / te) * m2)
		te = de
		testFe[i] = float32(math.Exp(-de))
		testWe[i] = float32(de / m2)
	}

        Preconditions.checkArgument(!versions.isEmpty(), "versions must not be empty");
        this.versions = new TreeMap<>(versions);
    }

    public CacheVersion getLatestVersion() {
        return versions.get(versions.lastKey());
    }

    public Optional<CacheVersion> getVersionUsedBy(GradleVersion gradleVersion) {
        GradleVersion versionToFind = gradleVersion.isSnapshot() ? gradleVersion.getBaseVersion() : gradleVersion;

  public void testFirst() {
    assertEquals(a.getKey(), navigableMap.firstKey());
  }

  @CollectionSize.Require(SEVERAL)
  public void testLast() {
    assertEquals(c.getKey(), navigableMap.lastKey());
  }

  @CollectionSize.Require(absent = ZERO)
  public void testHeadMapExclusive() {
    assertFalse(navigableMap.headMap(a.getKey()).containsKey(a.getKey()));
  }

  @CollectionSize.Require(absent = ZERO)

	if err := pkiutil.WriteCertAndKey(
		dirPKI,
		caName,
		testCACert,
		testCAKey); err != nil {
		t.Fatalf("couldn't write out certificate %s to %s", caName, dirPKI)
	}

	// creates a certificate and then embeds it into a kubeconfig file
	cert := writeTestKubeconfig(t, dirKubernetes, "test", testCACert, testCAKey, time.Time{}, time.Time{})

	// Creates a KubeconfigReadWriter

  public void testFirst() {
    assertEquals(a.getKey(), navigableMap.firstKey());
  }

  @CollectionSize.Require(SEVERAL)
  public void testLast() {
    assertEquals(c.getKey(), navigableMap.lastKey());
  }

  @CollectionSize.Require(absent = ZERO)
  public void testHeadMapExclusive() {
    assertFalse(navigableMap.headMap(a.getKey()).containsKey(a.getKey()));
  }

  @CollectionSize.Require(absent = ZERO)

      @SuppressWarnings("unchecked")
      K castKey = (K) key;

      if (!isExpired(stamped)) {
        alertListenerIfPresent(castKey, value, RemovalCause.EXPLICIT);
        return value;
      }

      alertListenerIfPresent(castKey, value, RemovalCause.EXPIRED);
    }
    return null;
  }

  @Override

			if !ok || v != v1 {
				t.Errorf("at iteration %d got %d, %d want %d, %d", cnt, i, v, i, v1)
			}
			cnt++
		}
		if cnt != size {
			t.Errorf("read %d values expected %d", cnt, size)
		}
	}
}

func TestKeys(t *testing.T) {
	for size := 0; size < 10; size++ {
		var want []int
		m := make(map[int]int)
		for i := range size {
			m[i] = i
			want = append(want, i)
		}

		var got []int
		for k := range Keys(m) {