/**
* Sums the skills of another SkillMap object to this
*
* @param SkillMap $skillMap of skills to be added
*
* @return void
*/
public function addSkillMap(SkillMap $skillMap)
{
foreach ($skillMap->getSkills() as $skillID => $level) {
$this->addSkill($skillID, $level);
}
}
