private Var addProperty(VarProperty property){
  if (property.isUnique()) {
    testUniqueProperty((UniqueVarProperty)property);
  }
  properties.add(property);
  return this;
}

private Var addProperty ( VarProperty property ) { if ( property . isUnique ( ) ) { testUniqueProperty ( ( UniqueVarProperty ) property ) ; } properties . add ( property ) ; return this ; }
add a non - unique property
