Declared in <util/fs.h>
[[nodiscard]]
std::string
generic_string() const;
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template<
class _ECharT,
class _Traits = char_traits<_ECharT>,
class _Allocator = allocator<_ECharT>>
[[nodiscard]]
basic_string<_ECharT, _Traits, _Allocator>
generic_string(_Allocator const& __a = _Allocator()) const;
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The return value should not be discarded.