@property<EOL><INDENT>def client_id(self):<DEDENT>
return self._client_id<EOL>
Gets the client_id of this Transaction.
If the transaction was created in the Square Point of Sale app, this value is the ID generated for the transaction by Square Point of Sale.  This ID has no relationship to the transaction's canonical `id`, which is generated by Square's backend servers. This value is generated for bookkeeping purposes, in case the transaction cannot immediately be completed (for example, if the transaction is processed in offline mode).  It is not currently possible with the Connect API to perform a transaction lookup by this value.

:return: The client_id of this Transaction.
:rtype: str