Method is_valid

dependencies/httplib/httplib.h:3074–3074

inline gzip_decompressor::~gzip_decompressor() { inflateEnd(&strm_); }

inline bool gzip_decompressor::is_valid() const { return is_valid_; }

inline bool gzip_decompressor::decompress(const char *data, size_t data_length,
                                          Callback callback) {