Method Resize

util/system/file.cpp:977–981

    }

    void Resize(i64 length) {
        if (!Handle_.Resize(length)) {
            ythrow TFileError() << "can't resize " << FileName_.Quote() << " to size " << length;
        }
    }

    void Reserve(i64 length) {
        if (!Handle_.Reserve(length)) {