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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 spawn(self, context=None):
 """ context may be a callable or a dict. """

        if context is None:
            context = self.default_context

        if isinstance(context, collections.Callable):
            context = context()

        if not isinstance(context, collections.Mapping):
            raise PatchboardError('Cannot determine a valid context')

        return Client(self, context, self.api, self.endpoint_classes)