A command activity.
A result of a command activity.
An update to a contact relationship.
An update to a conversation.
An activity to delete user data.
Indicates the end of a conversation.
An event activity.
A handoff activity to another bot or human.
An update to an installation.
An invoke activity.
A response to an invoke activity.
A message activity.
A deletion of a message.
A reaction to a message.
An update to a message.
A suggestion activity.
A trace activity for debugging.
A typing indicator activity.
Enum representing activity types.