* Returns the cache configuration for downloaded resources.
     */
    CacheResourceConfiguration getDownloadedResources();

    /**
     * Configures caching for resources that are created by Gradle during the course of a build.  By default, created
     * resources are removed after 7 days of not being used.
     */
    void createdResources(Action<? super CacheResourceConfiguration> cacheConfiguration);

    /**

# Body - Multiple Parameters

Now that we have seen how to use `Path` and `Query`, let's see more advanced uses of request body declarations.

## Mix `Path`, `Query` and body parameters

First, of course, you can mix `Path`, `Query` and request body parameter declarations freely and **FastAPI** will know what to do.

And you can also declare body parameters as optional, by setting the default to `None`:

=== "Python 3.10+"

   * parameter as non-nullable (since passing null to a FilenameFilter is unsafe in general), but if
   * someone still manages to pass null, let's continue to have the method work.
   *
   * (PatternFilenameFilter is of course one of those classes that shouldn't be a publicly visible
   * class to begin with but rather something returned from a static factory method whose declared

// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Support for pidfd was added during the course of a few Linux releases:
//  v5.1: pidfd_send_signal syscall;
//  v5.2: CLONE_PIDFD flag for clone syscall;
//  v5.3: pidfd_open syscall, clone3 syscall;
//  v5.4: P_PIDFD idtype support for waitid syscall;
//  v5.6: pidfd_getfd syscall.

package os

// As of Go 1.23, the garbage collector can recover unreferenced
// tickers, even if they haven't been stopped.
// The Stop method is no longer necessary to help the garbage collector.
// (Code may of course still want to call Stop to stop the ticker for other reasons.)
func NewTicker(d Duration) *Ticker {
	if d <= 0 {
		panic("non-positive interval for NewTicker")
	}
	// Give the channel a 1-element time buffer.

So, even with the code above that doesn't use Pydantic explicitly, FastAPI is using Pydantic to convert those standard dataclasses to Pydantic's own flavor of dataclasses.

And of course, it supports the same:

* data validation
* data serialization
* data documentation, etc.

This works the same way as with Pydantic models. And it is actually achieved in the same way underneath, using Pydantic.

		&compbasemetrics.CounterOpts{
			Namespace:      namespace,
			Name:           "cache_list_fetched_objects_total",
			Help:           "Number of objects read from watch cache in the course of serving a LIST request",
			StabilityLevel: compbasemetrics.ALPHA,
		},
		[]string{"resource_prefix", "index"},
	)
	listCacheNumReturned = compbasemetrics.NewCounterVec(
		&compbasemetrics.CounterOpts{

// result type from the assignment to keep things simple and
// easy to understand.
var _ = new[int]()
var _ *float64 = new[float64]() // the result type is indeed *float64

// A function may have multiple type parameters, of course.
func foo[A, B, C any](a A, b []B, c *C) B {
	// do something here
	return b[0]
}

// As before, we can pass type parameters explicitly.
var s = foo[int, string, float64](1, []string{"first"}, new[float64]())

#### A "professional" attack

Of course, the attackers would not try all this by hand, they would write a program to do it, possibly with thousands or millions of tests per second. And would get just one extra correct letter at a time.

```
http://127.0.0.1:8000/items/foo-item?needy=sooooneedy
```

...this would work:

```JSON
{
    "item_id": "foo-item",
    "needy": "sooooneedy"
}
```

And of course, you can define some parameters as required, some as having a default value, and some entirely optional:

=== "Python 3.10+"

    ```Python hl_lines="8"
    {!> ../../../docs_src/query_params/tutorial006_py310.py!}