// Inspired from Golang sync.Once but it is only marked
// initialized when the provided function returns nil.

// Init represents the structure.
type Init struct {
	done uint32
	m    sync.Mutex
}

// Do is similar to sync.Once.Do - makes one successful
// call to the function. ie, it invokes the function
// if it is not successful yet.
func (l *Init) Do(f func() error) error {
	if atomic.LoadUint32(&l.done) == 0 {
		return l.do(f)

import com.google.common.annotations.J2ktIncompatible;
import com.google.common.annotations.VisibleForTesting;
import org.jspecify.annotations.Nullable;

/**
 * Implementation of {@link ImmutableList} backed by a simple array.
 *
 * @author Kevin Bourrillion
 */
@GwtCompatible
@SuppressWarnings("serial") // uses writeReplace(), not default serialization
final class RegularImmutableList<E> extends ImmutableList<E> {

 */
package org.apache.maven.artifact.resolver;

import java.util.List;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.repository.ArtifactRepository;

/**
 * A simple recording of the Artifacts that could not be resolved for a given resolution request, along with
 * the remote repositories where attempts were made to resolve the artifacts.
 *
 */
@Deprecated

 * limitations under the License.
 */
package okhttp3.internal.tls

import java.security.cert.X509Certificate
import javax.security.auth.x500.X500Principal

/** A simple index that of trusted root certificates that have been loaded into memory. */
class BasicTrustRootIndex(
  vararg caCerts: X509Certificate,
) : TrustRootIndex {

                + "    <loc>http://www.example.com/sample.html</loc>\n" + "    <image:image>\n"
                + "      <image:loc>http://www.example.com/image.jpg</image:loc>\n"
                + "      <image:caption>Sample image caption</image:caption>\n" + "      <image:title>Sample image title</image:title>\n"
                + "      <image:geo_location>Tokyo, Japan</image:geo_location>\n"

### Utilize o atributo `app.dependency_overrides` { #use-the-app-dependency-overrides-attribute }

Para estes casos, a sua aplicação **FastAPI** possui o atributo `app.dependency_overrides`. Ele é um simples `dict`.

Para sobrepor a dependência para os testes, você coloca como chave a dependência original (a função), e como valor, a sua sobreposição da dependência (outra função).

import org.apache.maven.slf4j.MavenLoggerFactory;
import org.slf4j.ILoggerFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Configuration for slf4j-simple.
 *
 * @since 3.1.0
 */
public class MavenSimpleConfiguration extends BaseSlf4jConfiguration {
    private static final Logger LOGGER = LoggerFactory.getLogger(MavenSimpleConfiguration.class);

    @Override

      return (T) in.readObject();
    } catch (IOException | ClassNotFoundException e) {
      throw new AssertionError(e);
    }
  }

  @Override
  public SampleElements<E> samples() {
    return delegate.samples();
  }

  @Override
  public E[] createArray(int length) {
    return delegate.createArray(length);
  }

  @Override
  public Iterable<E> order(List<E> insertionOrder) {

     */
    public boolean encloses(ArtifactScopeEnum scope) {
        final ArtifactScopeEnum s = checkScope(scope);

        // system scope is historic only - and simple
        if (id == system.id) {
            return scope.id == system.id;
        }

        for (ArtifactScopeEnum[][] set : COMPLIANCY_SETS) {
            if (id == set[0][0].id) {

    private ReserializedSetGenerator(OneSizeTestContainerGenerator<Collection<E>, E> gen) {
      this.gen = gen;
    }

    @Override
    public SampleElements<E> samples() {
      return gen.samples();
    }

    @Override
    public Set<E> create(Object... elements) {
      return (Set<E>) SerializableTester.reserialize(gen.create(elements));
    }

    @Override