Get results from the Tavily Research API asynchronously.
raw_results_async(
self,
input: str,
research_model: Optional[Literal['mini', 'pro', 'auto']],
output_schema: Optional[Dict[str, Any]],
stream: Optional[bool],
citation_format: Optional[Literal['numbered', 'mla', 'apa', 'chicago']],
**kwargs: Any = {}
) -> Union[Dict[str, Any], AsyncGenerator[bytes, None]]