### Dependency Injection { #dependency-injection }

FastAPI includes an extremely easy to use, but extremely powerful <abbr title='also known as "components", "resources", "services", "providers"'><strong>Dependency Injection</strong></abbr> system.

* Even dependencies can have dependencies, creating a hierarchy or **"graph" of dependencies**.
* All **automatically handled** by the framework.

            synchronized (this) {
                // Force disconnection
                this.connectionState.set(0);
                this.tid = -1;

                // Clear any cached resources
                // Note: Most fields in SmbTreeImpl are final or managed differently

                // Clear session reference if mutable
                // Note: session field may be final, cannot be nulled

	for _, upload := range lm.Uploads {
		if upload.UploadID == uploadID {
			return true
		}
	}
	return false
}

// ListMultipartsInfo - represents bucket resources for incomplete multipart uploads.
type ListMultipartsInfo struct {
	// Together with upload-id-marker, this parameter specifies the multipart upload
	// after which listing should begin.
	KeyMarker string

```
~ mc admin config set alias/ scanner
KEY:

  private static final Comparator<Double> VALUE_COMPARATOR =
      Ordering.<Double>natural().reverse().nullsFirst();

  /**
   * Test that creating one TreeMultimap from another does not copy the comparators from the source
   * TreeMultimap.
   */
  public void testCreateFromTreeMultimap() {
    Multimap<Double, Double> tree = TreeMultimap.create(KEY_COMPARATOR, VALUE_COMPARATOR);
    tree.put(1.0, 2.0);
    tree.put(2.0, 3.0);

 *
 * @author Bob Lee
 * @author Ben Yu
 * @author Gregory Kick
 * @since 10.0 (<a href="https://github.com/google/guava/wiki/Compatibility">mostly
 *     source-compatible</a> since 4.0)
 */
@GwtCompatible
/*
 * The type parameter is <T> rather than <T extends @Nullable> so that we can use T in the
 * doEquivalent and doHash methods to indicate that the parameter cannot be null.

                    throw new ServletException(e);
                }
            }
        };
    }

    /**
     * Helper method to initialize NetworkExplorer with mocked resources
     */
    private void initializeNetworkExplorer(boolean enableBasic, String realm) throws ServletException {
        networkExplorer = createMockedNetworkExplorer(enableBasic, realm);

 * with {@link Collection} itself). Prefer subtypes such as {@link ImmutableSet} or {@link
 * ImmutableList}, which have well-defined {@link #equals} semantics, thus avoiding a common source
 * of bugs and confusion.
 *
 * <h3>About <i>all</i> {@code Immutable-} collections</h3>
 *
 * <p>The remainder of this documentation applies to every public {@code Immutable-} type in this

   * interface, whose return type {@code AnnotatedType[]} is also new in Java 8. As of 2025, Android
   * has not added {@link AnnotatedType}. That means that we cannot implement that interface in
   * source code in a way that will compile on both Java and Android. If we include the {@code
   * getAnnotatedBounds()} method, then its return type means it won't compile on Android, while if

				"application/x-tika-ooxml-protected",
				"application/x-tika-staroffice",
				"application/x-uc2-compressed",
				"application/x-ustar",
				"application/x-vmdk",
				"application/x-wais-source",
				"application/x-webarchive",
				"application/x-x509-ca-cert",
				"application/x-xfig",
				"application/x-xpinstall",
				"application/x-xmind",
				"application/x-xz",
				"application/x-zoo",