get Unique Name
Get unique name of the conversation.
Unique name is similar to SID but can be specified by the user.
Return
Conversation unique name or null if it was not set.
See also
#set Unique Name
#setUniqueName
Get unique name of the conversation.
Unique name is similar to SID but can be specified by the user.
Conversation unique name or null if it was not set.
#setUniqueName