Python method to call the CUSUM procedure

        Documentation link:
        https://go.documentation.sas.com/?cdcId=pgmsascdc&cdcVersion=9.4_3.4&docsetId=qcug&docsetTarget=qcug_cusum_toc.htm&locale=en
        :param data: SASdata object or string. This parameter is required.
        :parm by: The by variable can only be a string type.
        :parm inset: The inset variable can only be a string type.
        :parm xchart: The xchart variable can only be a string type.
        :parm procopts: The procopts variable is a generic option available for advanced use. It can only be a string type.
        :parm stmtpassthrough: The stmtpassthrough variable is a generic option available for advanced use. It can only be a string type.
        :return: SAS Result Object

def cusum(self, data: ['SASdata', str] = None,
              by: str = None,
              inset: str = None,
              xchart: str = None,
              procopts: str = None,
              stmtpassthrough: str = None,
              **kwargs: dict) -> 'SASresults':
        """
        Python method to call the CUSUM procedure

        Documentation link:
        https://go.documentation.sas.com/?cdcId=pgmsascdc&cdcVersion=9.4_3.4&docsetId=qcug&docsetTarget=qcug_cusum_toc.htm&locale=en
        :param data: SASdata object or string. This parameter is required.
        :parm by: The by variable can only be a string type.
        :parm inset: The inset variable can only be a string type.
        :parm xchart: The xchart variable can only be a string type.
        :parm procopts: The procopts variable is a generic option available for advanced use. It can only be a string type.
        :parm stmtpassthrough: The stmtpassthrough variable is a generic option available for advanced use. It can only be a string type.
        :return: SAS Result Object
        """