public Builder withSendBufferSize(int sendBufferSize){
  properties.setProperty(NettyOptions.SEND_BUFFER_SIZE,String.valueOf(Assert.argNot(sendBufferSize,sendBufferSize <= 0,"buffer size must be positive")));
  return this;
}

public Builder withSendBufferSize ( int sendBufferSize ) { properties . setProperty ( NettyOptions . SEND_BUFFER_SIZE , String . valueOf ( Assert . argNot ( sendBufferSize , sendBufferSize <= 0 , "buffer size must be positive" ) ) ) ; return this ; }
sets the send buffer size .
