def newForAttributes(cls, sipMethod="", requestURI="", content="", header=None):
startLine = SIPRequestStartLine.newForAttributes(sipMethod=sipMethod, requestURI=requestURI)
# SIPMessage._newForAttributes(cls, startLine=startLine, content=content, header=header)
return cls._newForAttributes(startLine=startLine, content=content, header=header)
