code: public boolean leavePlace ()
      {
          if (_pendingPlaceId != -1) {
              return false;
          }
  
          _lservice.leavePlace();
          didLeavePlace();
  
          // let our observers know that we're no longer in a location
          _observers.apply(_didChangeOp);
  
          return true;
      }
docs: Issues a request to leave our current location.
  
  @return true if we were able to leave, false if we are in the middle of moving somewhere and
  can't yet leave.