public PartyRelationshipConstraint(PartyRelationshipType relationshipType, Func <PartyRelationship, PartyRole, bool> predicate) : this()
{
RelationshipType = relationshipType;
Predicate = predicate;
}
public PartyRelationship(PartyRelationshipType typ) : this()
{
Type = typ;
Type.Relationship[Type.Title] = this;
}