Adds conversations to the link group of the conversation in the path, which becomes the original conversation of the group.
If it belongs to no group yet, a new one is formed. A conversation belongs to at most one group, and a conversation that
was linked to another one cannot become an original conversation.
Required scope: conversations:write
No content
If the conversation has been merged, the response redirects you to the merged conversation.
If a conversation is linked to itself, if no ids or more than 20 ids are supplied, if one of them already belongs to a group, or if the conversation in the path was itself linked to another conversation.
If your plan does not include linked conversations.
If the conversation in the path or one of the conversations to link does not exist or is not accessible.