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// CS0121: The call is ambiguous between the following methods or properties: `A.operator +(A, B)' and `B.operator +(A, B)'
// Line: 21
class A
{
public static A operator + (A a, B b)
{
return null;
}
}
class B
{
public static A operator + (A a, B b)
{
return null;
}
static void Main ()
{
object o = new A () + new B ();
}
}