The user in user.display_name in the working example is from the function (error, user). You’re looking for user.streams in your example, though you should probably rename user in your function to be more descriptive of what it contains.
The user in user.display_name in the working example is from the function (error, user). You’re looking for user.streams in your example, though you should probably rename user in your function to be more descriptive of what it contains.