code: public function expectMinimumCallCount($method, $count, $message = '%s')
      {
          $this->dieOnNoMethod($method, 'set minimum call count');
          $message .= Mock::getExpectationLine();
          $this->expected_counts[strtolower($method)] =
                  new MinimumCallCountExpectation($method, $count, $message);
      }
docs: Sets the number of times to call a method to prevent a failure on the tally.
  
  @param string $method      Method call to test.
  @param int $count          Least number of times it should have been called.
  @param string $message     Overridden message.