return null;
    } else {
      Range<K> range = ranges.get(index);
      return range.contains(key) ? Maps.immutableEntry(range, values.get(index)) : null;
    }
  }

  @Override
  public Range<K> span() {
    if (ranges.isEmpty()) {
      throw new NoSuchElementException();
    }
    Range<K> firstRange = ranges.get(0);
    Range<K> lastRange = ranges.get(ranges.size() - 1);

    assertEquals(ImmutableSortedSet.of(4), Sets.subSet(set, Range.open(2, 6)));
    assertEquals(ImmutableSortedSet.of(4, 6), Sets.subSet(set, Range.open(3, 7)));
    assertEquals(empty, Sets.subSet(set, Range.open(20, 30)));

    assertEquals(set, Sets.subSet(set, Range.openClosed(0, 12)));
    assertEquals(ImmutableSortedSet.of(2, 4), Sets.subSet(set, Range.openClosed(0, 4)));

  private final transient Reference<AvlNode<E>> rootReference;
  private final transient GeneralRange<E> range;
  private final transient AvlNode<E> header;

  TreeMultiset(Reference<AvlNode<E>> rootReference, GeneralRange<E> range, AvlNode<E> endLink) {
    super(range.comparator());
    this.rootReference = rootReference;
    this.range = range;
    this.header = endLink;
  }

  TreeMultiset(Comparator<? super E> comparator) {

        }
    }

    public void setCreatedTime_Range() {
        setCreatedTime_Range(null);
    }

    public void setCreatedTime_Range(ConditionOptionCall<RangeAggregationBuilder> opLambda) {
        setCreatedTime_Range("createdTime", opLambda, null);
    }

    public void setCreatedTime_Range(ConditionOptionCall<RangeAggregationBuilder> opLambda, OperatorCall<BsRoleTypeCA> aggsLambda) {

        }
    }

    public void setCreatedTime_Range() {
        setCreatedTime_Range(null);
    }

    public void setCreatedTime_Range(ConditionOptionCall<RangeAggregationBuilder> opLambda) {
        setCreatedTime_Range("createdTime", opLambda, null);
    }

    public void setCreatedTime_Range(ConditionOptionCall<RangeAggregationBuilder> opLambda, OperatorCall<BsCrawlingInfoCA> aggsLambda) {

    }

    public void setEndTime_Range() {
        setEndTime_Range(null);
    }

    public void setEndTime_Range(ConditionOptionCall<RangeAggregationBuilder> opLambda) {
        setEndTime_Range("endTime", opLambda, null);
    }

    public void setEndTime_Range(ConditionOptionCall<RangeAggregationBuilder> opLambda, OperatorCall<BsJobLogCA> aggsLambda) {
        setEndTime_Range("endTime", opLambda, aggsLambda);
    }

        }
    }

    public void setCreatedTime_Range() {
        setCreatedTime_Range(null);
    }

    public void setCreatedTime_Range(ConditionOptionCall<RangeAggregationBuilder> opLambda) {
        setCreatedTime_Range("createdTime", opLambda, null);
    }

    public void setCreatedTime_Range(ConditionOptionCall<RangeAggregationBuilder> opLambda, OperatorCall<BsPathMappingCA> aggsLambda) {

        }
    }

    public void setCreatedTime_Range() {
        setCreatedTime_Range(null);
    }

    public void setCreatedTime_Range(ConditionOptionCall<RangeAggregationBuilder> opLambda) {
        setCreatedTime_Range("createdTime", opLambda, null);
    }

    public void setCreatedTime_Range(ConditionOptionCall<RangeAggregationBuilder> opLambda, OperatorCall<BsLabelTypeCA> aggsLambda) {

                () -> newModelResolver().resolveModel(session, parent, new AtomicReference<>()),
                "Expected 'ModelResolverException' not thrown.");
        assertEquals("No versions matched the requested version range '[2.0,2.1)'", e.getMessage());
    }

    @Test
    void testResolveParentThrowsModelResolverExceptionWhenUsingRangesWithoutUpperBound() throws Exception {
        final Parent parent = Parent.newBuilder()

import com.google.common.primitives.Booleans;
import java.io.Serializable;
import java.util.NoSuchElementException;
import javax.annotation.CheckForNull;

/**
 * Implementation detail for the internal structure of {@link Range} instances. Represents a unique
 * way of "cutting" a "number line" (actually of instances of type {@code C}, not necessarily
 * "numbers") into two sections; this can be done below a certain value, above a certain value,