yii\elasticsearch\QueryBuilder::buildBetweenCondition PHP Method

    private function buildBetweenCondition($operator, $operands)
    {
        if (!isset($operands[0], $operands[1], $operands[2])) {
            throw new InvalidParamException("Operator '{$operator}' requires three operands.");
        }
        list($column, $value1, $value2) = $operands;
        if ($column == '_id') {
            throw new NotSupportedException('Between condition is not supported for the _id field.');
        }
        $filter = ['range' => [$column => ['gte' => $value1, 'lte' => $value2]]];
        if ($operator == 'not between') {
            $filter = ['not' => $filter];
        }
        return $filter;
    }