fs::path::string

template<
    class _ECharT,
    class _Traits = char_traits<_ECharT>,
    class _Allocator = allocator<_ECharT>>
[[nodiscard, __visibility__, __exclude_from_explicit_instantiation__, __abi_tag__]]
basic_string<_ECharT, _Traits, _Allocator>
string(_Allocator const& __a = _Allocator()) const;