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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 resolve( self, configurable=None, scope=None, safe=None, besteffort=None ):
 """Resolve all parameters. :param Configurable configurable: configurable to use for foreign parameter resolution. :param dict scope: variables to use for parameter expression evaluation. :param bool safe: safe execution (remove builtins functions). :raises: Parameter.Error for any raised exception. """


        if scope is None:
            scope = self.scope

        if safe is None:
            safe = self.safe

        if besteffort is None:
            besteffort = self.besteffort

        for category in self.values():

            for param in category.values():

                param.resolve(
                    configurable=configurable, conf=self,
                    scope=scope, safe=safe, besteffort=besteffort
                )