orionll

interface Function0<T>
{
   T execute();
}

interface Function1<T, R>
{
    T execute(R arg1);
}

interface Function2<T, R1, R2>
{
    T execute(R1 arg1, R2 arg2);
}

interface Function3<T, R1, R2, R3>
{
    T execute(R1 arg1, R2 arg2, R3 arg3);
}

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