public void addRelation(Relation newRelation)
{
if (this.relations == null)
{
this.relations = new List<Relation>();
}
else
{
//if the object already has this relation
if (hasRelation(newRelation))
{
return;
}
}
this.relations.Add(newRelation);
}
//see if this object has a given relation
public bool hasRelation(Relation relation)
{
foreach (Relation relationTemp in this.relations)
{
if (relationTemp == relation)
{
return true;
}
}
return false;
}