"""

    def __init__(
        self,
        tokenUrl: Annotated[
            str,
            Doc(
                """
                The URL to obtain the OAuth2 token. This would be the *path operation*
                that has `OAuth2PasswordRequestForm` as a dependency.
                """
            ),
        ],
        scheme_name: Annotated[
            Optional[str],
            Doc(

                            "content": {"application/json": {"schema": {}}},
                        },
                        "404": {"description": "Not found"},
                        "403": {"description": "Operation forbidden"},
                        "422": {
                            "description": "Validation Error",
                            "content": {
                                "application/json": {

                            "content": {"application/json": {"schema": {}}},
                        },
                        "404": {"description": "Not found"},
                        "403": {"description": "Operation forbidden"},
                        "422": {
                            "description": "Validation Error",
                            "content": {
                                "application/json": {

    if route.tags:
        operation["tags"] = route.tags
    operation["summary"] = generate_operation_summary(route=route, method=method)
    if route.description:
        operation["description"] = route.description
    operation_id = route.operation_id or route.unique_id
    if operation_id in operation_ids:
        message = (
            f"Duplicate Operation ID {operation_id} for function "
            + f"{route.endpoint.__name__}"

    description: Optional[str] = None
    get: Optional[Operation] = None
    put: Optional[Operation] = None
    post: Optional[Operation] = None
    delete: Optional[Operation] = None
    options: Optional[Operation] = None
    head: Optional[Operation] = None
    patch: Optional[Operation] = None
    trace: Optional[Operation] = None
    servers: Optional[List[Server]] = None

    """
    Create an invoice.

    This will (let's imagine) let the API user (some external developer) create an
    invoice.

    And this path operation will:

    * Send the invoice to the client.
    * Collect the money from the client.
    * Send a notification back to the API user (the external developer), as a callback.

                            "content": {"application/json": {"schema": {}}},
                        },
                        "404": {"description": "Not found"},
                        "403": {"description": "Operation forbidden"},
                        "422": {
                            "description": "Validation Error",
                            "content": {
                                "application/json": {