public function getSubRoles(Role $role) {
		
		$parentName = $role->getRoleName();
		$subRoles = [];
		
		if(array_key_exists($role->getRoleName(), $this->mappedRoleNames)) {
			
			foreach($this->mappedRoleNames[$parentName] as $subRoleName) {
				$subRoles[] = new Role($subRoleName);
			}
			
		}
		
		return $subRoles;

	}