import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.ListIterator;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import org.checkerframework.checker.nullness.qual.Nullable;

@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
public class Helpers {
  // Clone of Objects.equal
  static boolean equal(@Nullable Object a, @Nullable Object b) {

         * The canonicalization routine
         */
        for ( int i = 0; i < length; i++ ) {
            switch ( state ) {
            case 0:
                if ( in[ i ] != '/' ) {
                    // Checked exception (e.g. MalformedURLException) would be better
                    // but this would be a nightmare API wise
                    throw new RuntimeCIFSException("Invalid smb: URL: " + this.url);
                }

common_parameters --> read_items
common_parameters --> read_users
```

Auf diese Weise schreiben Sie gemeinsam genutzten Code nur einmal, und **FastAPI** kümmert sich darum, ihn für Ihre *Pfadoperationen* aufzurufen.

/// check

Beachten Sie, dass Sie keine spezielle Klasse erstellen und diese irgendwo an **FastAPI** übergeben müssen, um sie zu „registrieren“ oder so ähnlich.

import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.regex.Pattern;
import junit.framework.TestCase;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Unit test for {@link Doubles}.
 *
 * @author Kevin Bourrillion
 */
@ElementTypesAreNonnullByDefault
@GwtCompatible(emulated = true)
public class DoublesTest extends TestCase {

  // expirationSeconds is the requested duration of validity of the issued
  // certificate. The certificate signer may issue a certificate with a different
  // validity duration so a client must check the delta between the notBefore and
  // and notAfter fields in the issued certificate to determine the actual duration.
  //
  // The v1.22+ in-tree implementations of the well-known Kubernetes signers will

    val mySqlConnector = "mysql:mysql-connector-java"
    val netty = "io.netty:netty-all"
    val opentest4j = "org.opentest4j:opentest4j"
    val samplesCheck = "org.gradle.exemplar:samples-check"
    val samplesDiscovery = "org.gradle.exemplar:samples-discovery"
    val snappy = "org.iq80.snappy:snappy"
    val servletApi = "javax.servlet:javax.servlet-api"

		return Config{}, err
	}

	ssc := env.Get(StandardEnv, kvs.Get(ClassStandard))
	rrsc := env.Get(RRSEnv, kvs.Get(ClassRRS))
	// Check for environment variables and parse into storageClass struct
	if ssc != "" {
		cfg.Standard, err = parseStorageClass(ssc)
		if err != nil {
			return Config{}, err
		}
	} else {

          $ref: '#/components/responses/NotFound'
        '500':
          $ref: '#/components/responses/InternalServerError'
          
  /health:
    get:
      tags:
        - monitor
      summary: Check a server status
      description: Returns status
      operationId: ping
      responses:
        '200':
          description: Successful operation
          content:
            application/json:

common_parameters --> read_items
common_parameters --> read_users
```

Assim, você escreve um código compartilhado apenas uma vez e o **FastAPI** se encarrega de chamá-lo em suas *operações de rota*.

/// check | "Checando"

Perceba que você não precisa criar uma classe especial e enviar a dependência para algum outro lugar em que o **FastAPI** a "registre" ou realize qualquer operação similar.

			}
			return written, nil
		}
	}
}

// SafeClose safely closes any channel of any type
func SafeClose[T any](c chan<- T) {
	if c != nil {
		close(c)
		return
	}
	// Print stack to check who is sending `c` as `nil`
	// without crashing the server.
	debug.PrintStack()