private void write(byte[] buffer,int offset,int length,boolean isFinal){
  Objects.requireNonNull(buffer);
  _frameOut.write(buffer,offset,length,isFinal);
}

private void write ( byte [ ] buffer , int offset , int length , boolean isFinal ) { Objects . requireNonNull ( buffer ) ; _frameOut . write ( buffer , offset , length , isFinal ) ; }
write a binary chunk .
