We see that we are going to need some dependencies used in several places of the application.

So we put them in their own `dependencies` module (`app/dependencies.py`).

We will now use a simple dependency to read a custom `X-Token` header:

{* ../../docs_src/bigger_applications/app_an_py39/dependencies.py hl[3,6:8] title["app/dependencies.py"] *}

/// tip

We are using an invented header to simplify this example.

// - plugins with a dependency the same as the core but different versions, make it fail then fix it

  /*
 *
 * h2. Concerns for the plugin manager
 *
 * h3. resolving the dependencies of a plugin - these could be resolved remotely at runtime or, -
 * they could be resolved from a local repository - I think we need a simple dependency model here

    }

    /**
     * Registers this creator with the dictionary manager upon initialization.
     * This method is annotated with {@link PostConstruct} to be executed after
     * dependency injection is complete.
     */
    @PostConstruct
    public void register() {
        if (logger.isInfoEnabled()) {
            logger.info("Loaded {}", this.getClass().getSimpleName());
        }

  xsi:schemaLocation="http://maven.apache.org/METADATA/1.1.0 http://maven.apache.org/xsd/metadata-1.1.0.xsd">
  <groupId>ut.simple</groupId>
  <artifactId>dependency</artifactId>
  <versioning>
    <latest>1.0</latest>
    <release>1.0</release>
    <versions>
      <version>1.0</version>
    </versions>
    <lastUpdated>20111123122038</lastUpdated>
  </versioning>

## HTTP Basic Auth Simples { #simple-http-basic-auth }

* Importe `HTTPBasic` e `HTTPBasicCredentials`.
* Crie um "esquema `security`" utilizando `HTTPBasic`.
* Utilize o `security` com uma dependência em sua *operação de rota*.
* Isso retorna um objeto do tipo `HTTPBasicCredentials`:
    * Isto contém o `username` e o `password` enviado.

{* ../../docs_src/security/tutorial006_an_py39.py hl[4,8,12] *}

 * under the License.
 */
package org.apache.maven.repository.metadata;

import org.apache.maven.artifact.ArtifactScopeEnum;

/**
 * Resolves conflicts in the supplied dependency graph.
 * Different implementations will implement different conflict resolution policies.
 *
 */
@Deprecated
public interface GraphConflictResolver {
    String ROLE = GraphConflictResolver.class.getName();

/**
 * Service responsible for validating plugin dependencies.
 *
 * @since 3.9.3
 */
interface MavenPluginDependenciesValidator {
    /**
     * Checks mojo dependency issues.
     */
    void validate(
            RepositorySystemSession session,
            Artifact pluginArtifact,
            ArtifactDescriptorResult artifactDescriptorResult);

                .filter(d -> !DependencyScope.PROVIDED.is(d.getScope()) && !DependencyScope.TEST.is(d.getScope()))
                .map(org.eclipse.aether.graph.Dependency::getArtifact)
                .filter(a -> "org.apache.maven".equals(a.getGroupId()))
                .filter(a -> !DefaultPluginValidationManager.EXPECTED_PROVIDED_SCOPE_EXCLUSIONS_GA.contains(

package org.apache.maven.api;

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Nonnull;
import org.apache.maven.api.annotations.Nullable;

/**
 * Version constraint for dependency.
 * Constraint is either a range ("[1,2)") or recommended version ("1.0").
 *
 * {@code VersionConstraint} objects are created using the
 * {@linkplain org.apache.maven.api.services.VersionParser} service.
 *

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNull;

/**
 * Verifies scope of root project is preserved regardless of parent dependency management.
 *
 * @see <a href="https://issues.apache.org/jira/browse/MNG-2919">MNG-2919</a>
 */
@Deprecated
@SuppressWarnings("checkstyle:UnusedLocalVariable")