14 virtual void abort() = 0;
virtual void set_update_md5(const char *md5)=0
virtual OTAResponseTypes end()=0
virtual bool supports_compression()=0
virtual OTAResponseTypes write(uint8_t *data, size_t len)=0
virtual OTAResponseTypes begin(size_t image_size)=0
virtual ~OTABackend()=default