Set<Integer> nodes = graph.nodes();
    assertThrows(UnsupportedOperationException.class, () -> nodes.add(N2));
    addNode(N1);
    assertThat(graph.nodes()).containsExactlyElementsIn(nodes);
  }

  @Override
  @Test
  public void adjacentNodes_checkReturnedSetMutability() {
    assume().that(graphIsMutable()).isTrue();

    addNode(N1);
    Set<Integer> adjacentNodes = graph.adjacentNodes(N1);

    protected final int getDataCount() {
        return this.dataCount;
    }

    /**
     * Sets the data count for this transaction response
     * @param dataCount
     *            the dataCount to set
     */
    public final void setDataCount(final int dataCount) {
        this.dataCount = dataCount;
    }

    /**
     * Sets the transaction buffer
     * @param buffer

{* ../../docs_src/body_nested_models/tutorial002_py310.py hl[12] *}

## 集合型別 { #set-types }

但進一步思考後，我們會意識到 `tags` 不應該重覆，應該是唯一的字串。

而 Python 有一種用於唯一元素集合的特殊資料型別：`set`。

因此我們可以將 `tags` 宣告為字串的 `set`：

{* ../../docs_src/body_nested_models/tutorial003_py310.py hl[12] *}

這樣一來，即使收到包含重覆資料的請求，也會被轉換為由唯一元素組成的 `set`。

之後只要輸出該資料，即使來源有重覆，也會以唯一元素的 `set` 輸出。

並且也會在註解／文件中相應標示。

## 巢狀模型 { #nested-models }

/// tip

The syntax `{"name", "description"}` creates a `set` with those two values.

It is equivalent to `set(["name", "description"])`.

///

#### Using `list`s instead of `set`s { #using-lists-instead-of-sets }

If you forget to use a `set` and use a `list` or `tuple` instead, FastAPI will still convert it to a `set` and it will work correctly:

class Image(BaseModel):
    url: HttpUrl
    name: str


class Item(BaseModel):
    name: str
    description: str | None = None
    price: float
    tax: float | None = None
    tags: set[str] = set()
    images: list[Image] | None = None


class Offer(BaseModel):
    name: str
    description: str | None = None
    price: float
    items: list[Item]


@app.post("/offers/")

    return SampleElements.mapEntries(keys, values);
  }

  @Override
  public Set<Entry<K, V>> create(Object... elements) {
    Entry<K, V>[] entries = createArray(elements.length);
    arraycopy(elements, 0, entries, 0, elements.length);
    return createFromEntries(entries);
  }

  public abstract Set<Entry<K, V>> createFromEntries(Entry<K, V>[] entries);

  @Override

    } // -- void removeExtension( CoreExtension )

    /**
     * Set a set of build extensions to use from this project.
     *
     * @param extensions a extensions object.
     */
    public void setExtensions(List<CoreExtension> extensions) {
        this.extensions = extensions;
    } // -- void setExtensions( List )

    /**
     * Set the modelEncoding field.
     *

package com.google.common.graph;

import java.util.Set;

/**
 * Supertype for {@link Graphs}, containing the old signatures of methods whose signatures we've
 * changed. This provides binary compatibility for users who compiled against the old signatures.
 */
abstract class GraphsBridgeMethods {

  @SuppressWarnings("PreferredInterfaceType")
  public static <N> Graph<N> transitiveClosure(Graph<N> graph) {
    return Graphs.transitiveClosure(graph);

 * <li>{@link #setIndexName(String)} - Set the index name.</li>
 * <li>{@link #setSupportedFields(String[])} - Set the supported fields.</li>
 * <li>{@link #setTagFieldNames(String[])} - Set the tag field names.</li>
 * <li>{@link #setRoleFieldName(String)} - Set the role field name.</li>
 * <li>{@link #setReadingConverter(ReadingConverter)} - Set the reading converter.</li>

	if err != nil {
		t.Errorf("MinIO %s: Failed to create HTTP request for testing the response when object Layer is set to `nil`.", instanceType)
	}
	// Executes the object layer set to `nil` test.
	// `ExecObjectLayerAPINilTest` manages the operation.
	ExecObjectLayerAPINilTest(t, nilBucket, "", instanceType, apiRouter, nilReq)
}