public void The_http_extension_methods_can_be_composed_to_generate_the_http_message()
{
_formatter.WriteHttpStatusLine(GetUtf8EncodedString("1.1"), GetUtf8EncodedString("200"), GetUtf8EncodedString("OK"));
_formatter.WriteHttpHeader(GetUtf8EncodedString("Connection"), GetUtf8EncodedString("close"));
var httpHeaderBuffer = _formatter.WriteHttpHeader(GetUtf8EncodedString("Connection"), GetUtf8EncodedString("close"));
_formatter.EndHttpHeaderSection();
_formatter.WriteHttpBody(GetUtf8EncodedString(HttpBody));
_formatter.AppendNewLine();
_formatter.WriteHttpBody(GetUtf8EncodedString(HttpBody));
httpHeaderBuffer.UpdateValue("open");
var result = _formatter.Buffer;
result.Should().ContainInOrder(_httpMessageInBytes);
ManagedBufferPool <byte> .SharedByteBufferPool.ReturnBuffer(ref result);
}