// (8,28): error CS0630: 'VarArgs.Invoke(__arglist)' cannot implement interface member 'IVarArgs.Invoke(__arglist)' in type 'MyVarArgs' because it has an __arglist parameter.
// (15,16): error CS0630: 'MyVarArgs2.Invoke(__arglist)' cannot implement interface member 'IVarArgs.Invoke(__arglist)' in type 'MyVarArgs2' because it has an __arglist parameter
// (8,28): error CS0630: 'VarArgs.Invoke(__arglist)' cannot implement interface member 'IVarArgs.Invoke(__arglist)' in type 'MyVarArgs' because it has an __arglist parameter