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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 buscar_ambientep44_por_finalidade_cliente( self, finalidade_txt, cliente_txt):
 """Search ambiente_p44_txt environment vip :return: Dictionary with the following structure: :: {‘ambiente_p44_txt’: 'id':<'id_ambientevip'>, ‘finalidade’: <'finalidade_txt'>, 'cliente_txt: <'cliente_txt'>', 'ambiente_p44: <'ambiente_p44'>',} :raise InvalidParameterError: finalidade_txt and cliente_txt is null and invalid. :raise DataBaseError: Networkapi failed to access the database. :raise XMLError: Networkapi failed to generate the XML response. """


        vip_map = dict()
        vip_map['finalidade_txt'] = finalidade_txt
        vip_map['cliente_txt'] = cliente_txt

        url = 'environment-vip/get/ambiente_p44_txt/'

        code, xml = self.submit({'vip': vip_map}, 'POST', url)

        return self.response(code, xml)