@NotNull default B append8bit(@NotNull CharSequence cs) throws BufferOverflowException, BufferUnderflowException {
  return append8bit(cs,0,cs.length());
}

@ NotNull default B append8bit ( @ NotNull CharSequence cs ) throws BufferOverflowException , BufferUnderflowException { return append8bit ( cs , 0 , cs . length ( ) ) ; }
append a string to the bytes in iso - 8859 - 1
