private function get_grade($completion) {
        $grade = grade_get_course_grade($completion->userid, $this->course);
        return $grade->grade;
    }
private function get_grade($completion) {
        $grade = grade_get_course_grade($completion->userid, $this->course);
        return $grade->grade;
    }
private function get_grade ( $ completion ) { $ grade = grade_get_course_grade ( $ completion -> userid , $ this -> course ) ; return $ grade -> grade ; }
Get user's course grade in this course

@param completion_completion $completion an instance of completion_completion class
@return float
Get user s course grade in this course