reporter.php
public function paintGroupStart($test_case, $size)
    {
        if ($this->just_this_case && $this->matchesTestCase($test_case)) {
            $this->on();
        }
        $this->reporter->paintGroupStart($test_case, $size);
    }
public function paintGroupStart($test_case, $size)
    {
        if ($this->just_this_case && $this->matchesTestCase($test_case)) {
            $this->on();
        }
        $this->reporter->paintGroupStart($test_case, $size);
    }
Paints the start of a group test.

@param string $test_case     Name of test or other label.
@param int $size         Number of test cases starting.