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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 bm_create_button(self, **kwargs):
 """Shortcut to the BMCreateButton method. See the docs for details on arguments: https://cms.paypal.com/mx/cgi-bin/?cmd=_render-content&content_ID=developer/e_howto_api_nvp_BMCreateButton The L_BUTTONVARn fields are especially important, so make sure to read those and act accordingly. See unit tests for some examples. """

        kwargs.update(self._sanitize_locals(locals()))
        return self._call('BMCreateButton', **kwargs)