public void Concat()
{
var idt = new SymbolTable();
FullSymbol a1 = FullSymbol.Create(idt, @"C.A");
SymbolAtom p1 = SymbolAtom.Create(idt.StringTable, "B");
FullSymbol a2 = a1.Concat(idt, p1);
XAssert.AreEqual(@"C.AB", a2.ToString(idt));
}