@Override
  public boolean putAll(@ParametricNullness K key, Iterable<? extends V> values) {
    checkNotNull(values);
    // make sure we only call values.iterator() once
    // and we only call get(key) if values is nonempty
    if (values instanceof Collection) {
      Collection<? extends V> valueCollection = (Collection<? extends V>) values;
      return !valueCollection.isEmpty() && get(key).addAll(valueCollection);
    } else {

  @Override
  protected void assertGet(K key, V... values) {
    assertGet(key, asList(values));
  }

  @Override
  protected void assertGet(K key, Collection<? extends V> values) {
    assertEqualInOrder(values, multimap().get(key));

    if (!values.isEmpty()) {
      assertEqualInOrder(values, multimap().asMap().get(key));
      assertFalse(multimap().isEmpty());
    } else {

    checkNotNull(value2);
    checkArgument(!Objects.equal(value1, value2), "Duplicate value provided.");
    distinctValues.replaceValues(type, ImmutableList.of(value1, value2));
    setDefault(type, value1);
    return this;
  }

  /**
   * Tests that {@code cls} properly checks null on all constructor and method parameters that
   * aren't annotated nullable (according to the rules of {@link NullPointerTester}). In details:
   *

    // Populate the results list with null initially.
    for (int i = 0; i < futures.size(); ++i) {
      values.add(null);
    }

    this.values = values;
  }

  @Override
  final void collectOneValue(int index, @ParametricNullness V returnValue) {
    @RetainedLocalRef List<@Nullable Present<V>> localValues = values;
    if (localValues != null) {
      localValues.set(index, new Present<>(returnValue));
    }
  }

    public void setAvailable_PercentileRanks(double[] values) {
        setAvailable_PercentileRanks(values, null);
    }

    public void setAvailable_PercentileRanks(double[] values, ConditionOptionCall<PercentileRanksAggregationBuilder> opLambda) {
        setAvailable_PercentileRanks("available", values, opLambda);
    }

    public void setAvailable_PercentileRanks(String name, double[] values,

/**
 * Assists in populating an execution request for invocation of Maven.
 *
 */
public interface MavenExecutionRequestPopulator {
    /**
     * Copies the values from the given toolchains into the specified execution request. This method will replace any
     * existing values in the execution request that are controlled by the toolchains. Hence, it is expected that this

        List<String> values = null;

        for ( Entry<String, List<String>> entry : this.requestProperties.entrySet() ) {
            if ( key.equalsIgnoreCase(entry.getKey()) ) {
                values = entry.getValue();
                values.add(value);
                break;
            }
        }
        if ( values == null ) {
            values = new ArrayList<>();
            values.add(value);

      release: {{ .Release.Name }}
  ingress:
    - ports:
        - port: {{ .Values.minioAPIPort }}
        - port: {{ .Values.minioConsolePort }}
      {{- if not .Values.networkPolicy.allowExternal }}
      from:
        - podSelector:
            matchLabels:
              {{ template "minio.name" . }}-client: "true"
      {{- end }}

///

```Python hl_lines="8  13"
{!> ../../docs_src/dependencies/tutorial006.py!}
```

////

### Return values

And they can return values or not, the values won't be used.

So, you can reuse a normal dependency (that returns a value) you already use somewhere else, and even though the value won't be used, the dependency will be executed:

//// tab | Python 3.9+

```Python hl_lines="11  16"

        final String value = params.get(fieldName);
        if (StringUtil.isNotBlank(value)) {
            return OptionalThing.of(new Config(value));
        }
        return OptionalThing.empty();
    }

    public static class Config {

        private final String[] values;

        public Config(final String value) {