new AbstractBiMap<Integer, String>(
            new IdentityHashMap<Integer, String>(), new IdentityHashMap<String, Integer>()) {};
    bimap.put(1, "one");
    bimap.put(2, "two");
    bimap.put(3, "three");
    Iterator<Integer> iterator = bimap.keySet().iterator();
    iterator.next();
    iterator.next();
    iterator.remove();
    iterator.next();
    iterator.remove();
    assertEquals(1, bimap.size());

~~ KIND, either express or implied.  See the License for the
~~ specific language governing permissions and limitations
~~ under the License.

 -----
 Introduction
 -----
 Hervé Boutemy
 -----
 2006-11-04
 -----

Maven Toolchain Model

 This is the model for Maven toolchain in <<<org.apache.maven.toolchain>>> package,

  p.text += "\n      Most TF jobs run tests three times to root out flakes."
  if seen[key] == 3:
    p.text += (
        "\n      Since there were three failures, this is not flaky, and it"
    )
    p.text += "\n      probably caused the Kokoro invocation to fail."
  else:
    p.text += (
        "\n      Since there were not three failures, this is probably a flake."
    )
    p.text += (

        mapEntry("one", "January"),
        mapEntry("two", "February"),
        mapEntry("three", "March"),
        mapEntry("four", "April"),
        mapEntry("five", "May"));
  }

  @Override
  public SampleElements<String> sampleKeys() {
    return new SampleElements<>("one", "two", "three", "four", "five");
  }

  @Override
  public SampleElements<String> sampleValues() {

        mapEntry("one", "January"),
        mapEntry("two", "February"),
        mapEntry("three", "March"),
        mapEntry("four", "April"),
        mapEntry("five", "May"));
  }

  @Override
  public SampleElements<String> sampleKeys() {
    return new SampleElements<>("one", "two", "three", "four", "five");
  }

  @Override
  public SampleElements<String> sampleValues() {

${includes} = ?"${maven.user.conf}/maven.properties", \
              ?"${maven.project.conf}/maven.properties"

#
# Settings
#
# Define the default three levels for settings.
# The '-is' flag will override the 'maven.installation.settings' property.
# The '-ps' flag will override the 'maven.project.settings' property.
# The '-s' flag will override the 'maven.user.settings' property.

~~ KIND, either express or implied.  See the License for the
~~ specific language governing permissions and limitations
~~ under the License.

 -----
 ${project.name}
 -----
 Hervé Boutemy
 -----
 2016-11-14
 -----

${project.name}

 ${project.description}

* Useful entry points

~~ KIND, either express or implied.  See the License for the
~~ specific language governing permissions and limitations
~~ under the License.

 -----
 Introduction
 -----
 Jason van Zyl
 Vincent Siveton
 Hervé Boutemy
 -----
 2011-06-12
 -----

Maven Model

 This is strictly the model for Maven POM (Project Object Model) in <<<org.apache.maven.model>>> package,

      "FINE: Q10000 scheduled after 100 µs: task three",
      "FINE: Q10000 starting              : task one",
      "FINE: Q10000 finished run in   0 µs: task one",
      "FINE: Q10000 starting              : task two",
      "FINE: Q10000 finished run in   0 µs: task two",
      "FINE: Q10000 starting              : task three",
      "FINE: Q10000 finished run in   0 µs: task three",
    )
  }

  @Override
  protected Map<String, Integer> makeEmptyMap() {
    return ImmutableMap.of();
  }

  @Override
  protected Map<String, Integer> makePopulatedMap() {
    return ImmutableMap.of("one", 1, "two", 2, "three", 3);
  }

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

  @Override
  protected Integer getValueNotInPopulatedMap() {
    return -1;
  }