///<summary>
/// Sets the ActorRoleCollection to the array of ActorRole, deletes any previous values, initialises collection.
///</summary>
public void SetRoles(params IfcActorRole[] actorRoles)
{
if (_roles == null)
{
_roles = new ActorRoleCollection(this);
}
else
{
_roles.Clear();
}
foreach (IfcActorRole item in actorRoles)
{
_roles.Add(item);
}
}
