_filename is not used
            Args:
                _filename(string)

def output(self, _filename):
        """
            _filename is not used
            Args:
                _filename(string)
        """

        txt = ''
        for contract in self.slither.contracts_derived:
            txt += '\n{}:\n'.format(contract.name)
            table = PrettyTable(['Name', 'ID'])
            for function in contract.functions:
                if function.visibility in ['public', 'external']:
                    table.add_row([function.full_name, hex(get_function_id(function.full_name))])
            for variable in contract.state_variables:
                if variable.visibility in ['public']:
                    variable_getter_args = ""
                    if type(variable.type) is ArrayType:
                        length = 0
                        v = variable
                        while type(v.type) is ArrayType:
                            length += 1
                            v = v.type
                        variable_getter_args = ','.join(["uint256"]*length)
                    elif type(variable.type) is MappingType:
                        variable_getter_args = variable.type.type_from

                    table.add_row([f"{variable.name}({variable_getter_args})", hex(get_function_id(f"{variable.name}({variable_getter_args})"))])
            txt += str(table) + '\n'

        self.info(txt)