def newForAttributes(cls, statusCode=500, reasonPhrase="", content="", header=None):
startLine = SIPResponseStartLine.newForAttributes(statusCode=statusCode, reasonPhrase=reasonPhrase)
# SIPMessage._newForAttributes(cls, startLine=startLine, content=content, header=header)
return cls._newForAttributes(startLine=startLine, content=content, header=header)