}
```

## 8. Performance Metrics

### 8.1 Channel Statistics
```java
public class MultiChannelStatistics {
    private final Map<String, ChannelStatistics> channelStats;
    
    public class ChannelStatistics {
        private final AtomicLong bytesSent = new AtomicLong();
        private final AtomicLong bytesReceived = new AtomicLong();

   * order described in the <a href="#iteration">class documentation</a>.
   */
  public static <K, V> ImmutableMultimap<K, V> of(K k1, V v1, K k2, V v2, K k3, V v3) {
    return ImmutableListMultimap.of(k1, v1, k2, v2, k3, v3);
  }

  /**
   * Returns an immutable multimap containing the given entries, in the "key-grouped" insertion
   * order described in the <a href="#iteration">class documentation</a>.
   */

/**
 * Admin action for Path Map management.
 *
 */
public class AdminPathmapAction extends FessAdminAction {

    /**
     * Role identifier for admin path mapping operations.
     */
    public static final String ROLE = "admin-pathmap";

    private static final Logger logger = LogManager.getLogger(AdminPathmapAction.class);

    /**
     * Default constructor for AdminPathmapAction.
     */

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;

import jcifs.Configuration;

/**
 * Test class for TransWaitNamedPipeResponse
 */
class TransWaitNamedPipeResponseTest {

    @Mock
    private Configuration mockConfig;

    private TransWaitNamedPipeResponse response;

    @BeforeEach
    void setUp() {

/**
 * Manages a dictionary file for stopwords.
 * This class handles reading, parsing, and updating files that contain
 * a list of stopwords. Each line in the file represents a single stopword.
 *
 * The class provides methods for retrieving, adding, updating, and
 * deleting stopword items, as well as reloading the dictionary
 * from its source file.
 */
public class StopwordsFile extends DictionaryFile<StopwordsItem> {

  @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;

  private static final class BelowAll extends Cut<Comparable<?>> {
    private static final BelowAll INSTANCE = new BelowAll();

    private BelowAll() {
      /*
       * No code ever sees this bogus value for `endpoint`: This class overrides both methods that

import org.junit.jupiter.api.Test;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;

import jcifs.dcerpc.DcerpcConstants;

/**
 * Tests for {@link MsrpcSamrConnect4}.
 */
class MsrpcSamrConnect4Test implements DcerpcConstants {

    @Mock
    private SamrPolicyHandle policyHandle;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
    }

    /**

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.publicsuffix

import org.junit.runner.Runner

expect class PublicSuffixTestRunner : Runner

from typing import Union

from fastapi import FastAPI
from fastapi.encoders import jsonable_encoder
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: Union[str, None] = None
    description: Union[str, None] = None
    price: Union[float, None] = None
    tax: float = 10.5
    tags: list[str] = []


items = {
    "foo": {"name": "Foo", "price": 50.2},

from fastapi.responses import StreamingResponse
from sqlmodel import Field, Session, SQLModel, create_engine

engine = create_engine("postgresql+psycopg://postgres:postgres@localhost/db")


class User(SQLModel, table=True):
    id: int | None = Field(default=None, primary_key=True)
    name: str


app = FastAPI()


def get_session():
    with Session(engine) as session:
        yield session