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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 convert_to_base(self, unit_system=None, equivalence=None, **kwargs):
 """ Convert the array in-place to the equivalent base units in the specified unit system. Optionally, an equivalence can be specified to convert to an equivalent quantity which is not in the same dimensions. Parameters unit_system : string, optional The unit system to be used in the conversion. If not specified, the configured base units are used (defaults to MKS). equivalence : string, optional The equivalence you wish to use. To see which equivalencies are supported for this object, try the ``list_equivalencies`` method. Default: None kwargs: optional Any additional keyword arguments are supplied to the equivalence Raises ------ If the provided unit does not have the same dimensions as the array this will raise a UnitConversionError Examples -------- unyt_quantity(2.5e-07, 'W') """

        self.convert_to_units(
            self.units.get_base_equivalent(unit_system),
            equivalence=equivalence,
            **kwargs
        )