## Embed a single body parameter

Let's say you only have a single `item` body parameter from a Pydantic model `Item`.

By default, **FastAPI** will then expect its body directly.

But if you want it to expect a JSON with a key `item` and inside of it the model contents, as it does when you declare extra body parameters, you can use the special `Body` parameter `embed`:

```Python

                if (containingClassSymbol != null) {
                    val member = useSitePosition.parentsWithSelf
                        .filterNot { it is PsiTypeParameter }
                        .takeWhile { it !is PsiClass }
                        .firstIsInstanceOrNull<PsiTypeParameterListOwner>()

                    if (member != null) {

// represent type lists.  In particular, TypesN<T1, T2, ..., TN>
// represents a type list with N types (T1, T2, ..., and TN) in it.
// Except for Types0, every struct in the family has two member types:
// Head for the first type in the list, and Tail for the rest of the
// list.

// The empty type list.
struct Types0 {};

// Type lists of length 1, 2, 3, and so on.

template <typename T1>

}

// IsOneOf reports whether the rune is a member of one of the ranges.
// The function "In" provides a nicer signature and should be used in preference to IsOneOf.
func IsOneOf(ranges []*RangeTable, r rune) bool {
	for _, inside := range ranges {
		if Is(inside, r) {
			return true
		}
	}
	return false
}

// In reports whether the rune is a member of one of the ranges.
func In(r rune, ranges ...*RangeTable) bool {

    name: str
    description: Union[str, None] = None
    price: float
    tax: Union[float, None] = None


@app.put("/items/{item_id}")
async def update_item(item_id: int, item: Annotated[Item, Body(embed=True)]):
    results = {"item_id": item_id, "item": item}

	// A pointer to the base address of the region of pages.
	BaseAddress uintptr
	// A pointer to the base address of a range of pages allocated by the VirtualAlloc function.
	// The page pointed to by the BaseAddress member is contained within this allocation range.
	AllocationBase uintptr
	// The memory protection option when the region was initially allocated
	AllocationProtect uint32
	PartitionId       uint16

//go:build !js

package http

import _ "unsafe" // for linkname

// RoundTrip should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - github.com/erda-project/erda-infra
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname badRoundTrip net/http.(*Transport).RoundTrip

// at least one member of verbs matches the request, (b) at least one
// member of apiGroups matches the request, (c) at least one member of
// resources matches the request, and (d) either (d1) the request does
// not specify a namespace (i.e., `Namespace==""`) and clusterScope is
// true or (d2) the request specifies a namespace and least one member
// of namespaces matches the request's namespace.

import org.apache.commons.lang3.exception.ExceptionUtils;
import java.io.IOException;
import java.io.UnsupportedEncodingException;

public class HttpClientWrapper {

    private final HttpClient client; // private member: implementation details

    // HttpClient is used as a parameter of a public method
    // so "leaks" into the public API of this component
    public HttpClientWrapper(HttpClient client) {
        this.client = client;

import org.apache.commons.lang3.exception.ExceptionUtils;
import java.io.IOException;
import java.io.UnsupportedEncodingException;

public class HttpClientWrapper {

    private final HttpClient client; // private member: implementation details

    // HttpClient is used as a parameter of a public method
    // so "leaks" into the public API of this component
    public HttpClientWrapper(HttpClient client) {
        this.client = client;