```python
        import time
        from typing import Awaitable, Callable

        from fastapi import FastAPI, Request, Response

        app = FastAPI()


        @app.middleware("http")
        async def add_process_time_header(
            request: Request, call_next: Callable[[Request], Awaitable[Response]]
        ) -> Response:
            start_time = time.time()

rdown","removeEvent","nativeEvent","handlerQueue","fix","delegateTarget","preDispatch","isPropagationStopped","currentTarget","rnamespace","postDispatch","matchedHandlers","matchedSelectors","addProp","hook","Event","enumerable","originalEvent","writable","load","noBubble","click","beforeunload","returnValue","props","isDefaultPrevented","defaultPrevented","relatedTarget","timeStamp","Date","now","isSimulated","altKey","bubbles","cancelable","changedTouches","ctrlKey","detail","eventPhase","meta...