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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def split(self):
 """Split the scope. Returns: A (_PackageScope, _PackageScope) tuple, where the first scope is guaranteed to have a common dependency. Or None, if splitting is not applicable to this scope. """

        if self.package_request.conflict or (len(self.variant_slice) == 1):
            return None
        else:
            r = self.variant_slice.split()
            if r is None:
                return None
            else:
                slice, next_slice = r
                scope = self._copy(slice)
                next_scope = self._copy(next_slice)
                return (scope, next_scope)