Run on retry.
Whether to raise an error if an exception occurs.
Whether to run the callback inline.
Whether to ignore LLM callbacks.
Whether to ignore retry callbacks.
Whether to ignore chain callbacks.
Whether to ignore agent callbacks.
Whether to ignore retriever callbacks.
Whether to ignore chat model callbacks.
Ignore custom event.
Tracer that collects all nested runs in a list.
This tracer is useful for inspection and evaluation purposes.