/** Saves the coder to a file, returns 0 in case of success */
virtual uint save(FILE *fp)=0;
/** Loads a coder from a file, returns NULL in case of error */
static wt_coder * load(FILE *fp);
/** Saves the coder to a file, returns 0 in case of success */
virtual uint save(FILE *fp)=0;
/** Loads a coder from a file, returns NULL in case of error */
static wt_coder * load(FILE *fp);