W8048 Use qualified name to access member type 'identifier' (C++)

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(Command-line option to suppress warning: -w-nst)

In previous versions of the C++ specification, typedef and tag names declared inside classes were directly visible in the global scope.

In the latest specification of C++, these names must be prefixed with class::qualifier if they are to be used outside of their class scope.

The compiler issues this warning whenever a name is uniquely defined in a single class. The compiler permits this usage without class::. This allows older versions of code to compile.