# About { #about }

# Dependencies - `Depends()` and `Security()`

## `Depends()`

Dependencies are handled mainly with the special function `Depends()` that takes a callable.

Here is the reference for it and its parameters.

You can import it directly from `fastapi`:

```python
from fastapi import Depends
```

::: fastapi.Depends

## `Security()`

     */
    Mirror getMirror(ArtifactRepository repository, List<Mirror> mirrors);

    /**
     * Injects the mirroring information into the specified repositories. For each repository that is matched by a
     * mirror, its URL and ID will be updated to match the values from the mirror specification. Repositories without a
     * matching mirror will pass through unchanged. Note: This method must be called before

    private static final HashMap<String, String> DEPRECATED_CORE_PARAMETERS;

    private static final String ARTIFACT_REPOSITORY_REASON =
            "ArtifactRepository type is deprecated and its use in Mojos should be avoided.";

    static {
        HashMap<String, String> deprecatedCoreParameters = new HashMap<>();
        deprecatedCoreParameters.put("${localRepository}", ARTIFACT_REPOSITORY_REASON);

Not every module contributes to every runtime.

The core-runtime module defines each runtime:

- The target JVM for the runtime. Each runtime has its own JVM compatibility constraints.
- Some base services that are available to code hosted by the runtime. This varies by runtime.

<?xml version="1.0" encoding="UTF-8"?><metadata>
  <groupId>org.apache.maven.its.mng3906</groupId>
  <artifactId>c</artifactId>
  <version>0.1</version>
  <versioning>
    <release>0.1</release>
    <versions>
      <version>0.1</version>
    </versions>
    <lastUpdated>20081214111138</lastUpdated>
  </versioning>

   *
   * @since 10.0
   */
  public interface StatsCounter {
    /**
     * Records cache hits. This should be called when a cache request returns a cached value.
     *
     * @param count the number of hits to record
     * @since 11.0
     */
    void recordHits(int count);

    /**

<?xml version="1.0" encoding="UTF-8"?>
<metadata>
  <groupId>org.apache.maven.its</groupId>
  <artifactId>b</artifactId>
  <version>0.1</version>
  <versioning>
    <versions>
      <version>0.1</version>
    </versions>
    <lastUpdated>20091023222817</lastUpdated>
  </versioning>

<?xml version="1.0" encoding="UTF-8"?><metadata>
  <groupId>org.apache.maven.its.mng3906</groupId>
  <artifactId>b</artifactId>
  <version>0.1</version>
  <versioning>
    <release>0.1</release>
    <versions>
      <version>0.1</version>
    </versions>
    <lastUpdated>20081214111129</lastUpdated>
  </versioning>

<?xml version="1.0" encoding="UTF-8"?><metadata>
  <groupId>org.apache.maven.its.mng3906</groupId>
  <artifactId>e</artifactId>
  <version>0.1</version>
  <versioning>
    <release>0.1</release>
    <versions>
      <version>0.1</version>
    </versions>
    <lastUpdated>20081214111155</lastUpdated>
  </versioning>