Produce "task" events for stream_mode=debug.
Return True if the payload already wraps multiple writes from the same channel.
Folds task writes into a result dict and aggregates multiple writes to the same channel.
If the channel contains a single write, we record the write in the result dict as {channel: write}
If the channel contains multiple writes, we record the writes in the result dict as {channel: {'$writes': [write1, write2, ...]}}
Produce "task_result" events for stream_mode=debug.
Remove pregel-specific keys from the config.
Produce "checkpoint" events for stream_mode=debug.
Apply writes / subgraph states to tasks to be returned in a StateSnapshot.
Get colored text.
Get bolded text.
