MongoDB\Driver\Session::getOperationTime
  Returns the operation time for this session
  
 
  Description
  
   final public MongoDB\BSON\Timestampnull MongoDB\Driver\Session::getOperationTime()
  
  
 
  Parameters
  This function has no parameters.
  
 
  Return Values
  
   Returns the operation time for this session, or null if the session has no
   operation time.
  
  
 
  Errors/Exceptions
  
   - Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
 
 
  See Also
  
   -  MongoDB\Driver\Session::advanceOperationTime