# Reference

Here's the reference or code API, the classes, functions, parameters, attributes, and
all the FastAPI parts you can use in your applications.

If you want to **learn FastAPI** you are much better off reading the

 * of which connections to keep open for future use.
 *
 * @constructor Create a new connection pool with tuning parameters appropriate for a single-user
 * application. The tuning parameters in this pool are subject to change in future OkHttp releases.
 * Currently this pool holds up to 5 idle connections which will be evicted after 5 minutes of
 * inactivity.
 */

                os,
                arch,
                testCoverage.testJvmVersion.major.toString(),
                testCoverage.vendor.name.lowercase(),
            )
        val parameters =
            (
                buildToolGradleParameters() +
                    listOf(
                        "-PflakyTests=${FlakyTestStrategy.ONLY}",
                        "-x",

    //                                     Parameter Logging
    //                                     -----------------
    // logging filter cannot show the parameters when multi-part so logging here
    protected void showFieldLoggingTitle() {
        if (logger.isDebugEnabled()) {
            logger.debug("[Multipart Request Parameter]");
        }
    }

# `APIRouter` class

Here's the reference information for the `APIRouter` class, with all its parameters, attributes and methods.

You can import the `APIRouter` class directly from `fastapi`:

```python
from fastapi import APIRouter
```

::: fastapi.APIRouter
    options:
        members:
            - websocket
            - include_router
            - get
            - put
            - post
            - delete

# Parâmetros de consulta e validações de string { #query-parameters-and-string-validations }

O **FastAPI** permite declarar informações adicionais e validações para os seus parâmetros.

Vamos usar esta aplicação como exemplo:

{* ../../docs_src/query_params_str_validations/tutorial001_py310.py hl[7] *}

    <option name="METHOD_NAME" value="" />
    <option name="TEST_OBJECT" value="tags" />
    <option name="VM_PARAMETERS" value="-ea -Djunit.jupiter.extensions.autodetection.enabled=true" />
    <option name="PARAMETERS" value="" />
    <option name="TEST_SEARCH_SCOPE">
      <value defaultName="wholeProject" />
    </option>
    <tag value="!Slow &amp; !Slowish &amp; !Remote &amp; !Android" />
    <method v="2">

labels.boost=Boost
labels.crawlingConfigName=Name
labels.crawlingConfigPath=Path to Crawl
labels.processType=Process Type
labels.parameters=Parameters
labels.designFile=File to Upload
labels.bulkFile=Bulk File
labels.appendQueryParameter=Append Search Parameters
labels.configId=Config ID
labels.configParameter=Config Parameter
labels.content=Content
labels.csvFileEncoding=CSV Encoding
labels.defaultLabelValue=Default Label

In this case, this `__call__` is what **FastAPI** will use to check for additional parameters and sub-dependencies, and this is what will be called to pass a value to the parameter in your *path operation function* later.

## Parameterize the instance { #parameterize-the-instance }

And now, we can use `__init__` to declare the parameters of the instance that we can use to "parameterize" the dependency:

 * This command is used to negotiate the SMB protocol dialect
 * and security parameters between client and server.
 */
public class SmbComNegotiate extends ServerMessageBlock implements SmbNegotiationRequest {

    private final boolean signingEnforced;
    private String[] dialects;

    /**
     * Creates a new SMB1 negotiate request to establish protocol parameters.
     *
     * @param config the CIFS configuration