Does anyone know what I need to #include in order to get RtlCaptureStackBackTrace in VS2019?

The MSDN page suggests that it's in winnt.h but that I should either include FltKernel.h or Ntifs.h - but if I #include either FltKernel.h or Ntifs.h, the compiler tells me it can't find them (and in fact they don't seem to exist on my system). And if I simply #include winnt.h, RtlCaptureStackBackTrace comes up as an unidentified symbol