CallPostfixOp: advice for calls to postfix operators
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before A A::operator ++(int)
inside A A::operator ++(int)
before A A::operator ++()
inside A A::operator ++()
before A A::operator --(int)
inside A A::operator --(int)
before A A::operator --()
inside A A::operator --()
before int A::operator [](int)
inside A A::operator [](int)
inside A A::operator ()(int,bool=false)
inside A A::operator ()(int,bool=false)
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