Declared in <bdls_filesystemutil_windowsimputil.h>
<bdls_filesystemutil_windowsimputil.h>
static bsls::Types::Int64 const k_WINDOWS_TICKS_PER_MICROSECOND = bdlt::TimeUnitRatio::k_NANOSECONDS_PER_MICROSECOND / k_NANOSECONDS_PER_WINDOWS_TICK;