LLM Service

def register_function(
  self,
  function_name: str | None,
  callback,
  start_callback=None
)

def unregister_function(self, function_name: str | None)

def has_function(self, function_name: str) -> bool

async def request_image_frame(
  self,
  user_id: str,
  *,
  text_content: str | None = None
)