Document `Message.member` as being None when fetched from REST
@@ -475,7 +475,8 @@ class PartialMessage(snowflakes.Unique):
If the message is not in a guild, this will be `builtins.None`.
This will also be `builtins.None` in some cases such as when Discord updates
- a message with an embed URL preview.
+ a message with an embed URL preview or in messages fetched from the
+ REST API.
"""
content: undefined.UndefinedNoneOr[str] = attr.ib(repr=False)
