For example:

* [VS Code](https://code.visualstudio.com/docs/python/environments#_select-and-activate-an-environment)
* [PyCharm](https://www.jetbrains.com/help/pycharm/creating-virtual-environment.html)

/// tip

You normally have to do this only **once**, when you create the virtual environment.

///

## Deactivate the Virtual Environment { #deactivate-the-virtual-environment }

For more details about the extension, refer to the README on the [GitHub repository](https://github.com/fastapi/fastapi-vscode).

## Setup and Installation { #setup-and-installation }

    public Long createdTime;

    /**
     * The user agent string for this path mapping.
     */
    @Size(max = 1000)
    public String userAgent;

    /**
     * Initializes the form with default values for creating a new path mapping.
     */
    public void initialize() {
        crudMode = CrudMode.CREATE;
        sortOrder = 0;
        createdBy = ComponentUtil.getSystemHelper().getUsername();

import org.codelibs.fess.dict.DictionaryFile;
import org.codelibs.fess.dict.DictionaryItem;

import jakarta.annotation.PostConstruct;

/**
 * A dictionary creator for stemmer override files.
 * This class is responsible for creating {@link StemmerOverrideFile} instances
 * from files that match the pattern "stemmer_override.*\\.txt".
 */
public class StemmerOverrideCreator extends DictionaryCreator {

 * {@code readBytesWireFormat}.
 */
public class SmbComTransactionResponseTest {
    /** A minimal concrete subclass for testing */
    private static class DummyResponse extends SmbComTransactionResponse {
        DummyResponse() {
            super();
        }

        // Expose protected/private fields for testing
        boolean getIsPrimary() {
            return isPrimary;
        }

## An app with callbacks { #an-app-with-callbacks }

Let's see all this with an example.

Imagine you develop an app that allows creating invoices.

These invoices will have an `id`, `title` (optional), `customer`, and `total`.

The user of your API (an external developer) will create an invoice in your API with a POST request.

### Disable the automatic docs { #disable-the-automatic-docs }

The first step is to disable the automatic docs, as by default, those use the default CDN.

To disable them, set their URLs to `None` when creating your `FastAPI` app:

{* ../../docs_src/custom_docs_ui/tutorial001_py310.py hl[8] *}

### Include the custom docs { #include-the-custom-docs }

Now you can create the *path operations* for the custom docs.

     * reference. If the cached data is mutable, i.e. could be modified after being put into the cache, the caller is
     * responsible for creating a copy of the original data and store the copy in the cache.
     *
     * @param request The repository request from which this cache was retrieved, must not be {@code null}.

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.chat;

/**
 * Callback interface for receiving notifications about chat processing phases.
 * Used for SSE streaming to notify clients about the current processing state.
 */
public interface ChatPhaseCallback {

    /** Phase name for intent detection */
    String PHASE_INTENT = "intent";

 * encoding scheme. The set of safe characters (those which remain unescaped) can be specified on
 * construction.
 *
 * <p>This class is primarily used for creating URI escapers in {@link UrlEscapers} but can be used
 * directly if required. While URI escapers impose specific semantics on which characters are
 * considered 'safe', this class has a minimal set of restrictions.
 *