def __new__(self,url, xml, cookies):
obj=object.__new__(self)<EOL>obj.__init__(url, xml, cookies)<EOL>self.cookies=cookies<EOL>self._describeCoverage = {} <EOL>return obj<EOL>
overridden __new__ method 

        @type url: string
        @param url: url of WCS capabilities document
        @type xml: string
        @param xml: elementtree object
        @return: inititalised WCSBase object