Wire.requestFrom termination

When the following call is made:

bytesReady = Wire.requestFrom(address,count,false);

the Slave device may NACK the request and no bytes are available.
At this point the Master has the bus. Another call to Wire.requestFrom could be
made at this point with a third argument of 'true' to release the bus after getting
(or failing to get) another byte. What is the correct operation to call for the master
to release the bus without performing any other action? Wire.endTransmission might
do the trick, but, the documentation does not suggest that it will work. The
documentation does not offer any other insight as to how to terminate use of the bus
with no further action by the master.