public function addRows($rows)
    {
        foreach ($rows as $row) {
            $this->inputRows[] = $row;
            $inferredRow = $this->inferRow($row);
            foreach ($this->getFieldNames() as $fieldName) {
                /** @var BaseField $inferredField */
                $inferredField = $inferredRow[$fieldName];
                $inferredFieldType = $inferredField->getInferIdentifier($this->lenient);
                if (!array_key_exists($fieldName, $this->fieldsPopularity)) {
                    $this->fieldsPopularity[$fieldName] = [];
                    $this->fieldsPopularityObjects[$fieldName] = [];
                }
                if (!array_key_exists($inferredFieldType, $this->fieldsPopularity[$fieldName])) {
                    $this->fieldsPopularity[$fieldName][$inferredFieldType] = 0;
                    $this->fieldsPopularityObjects[$fieldName][$inferredFieldType] = $inferredField;
                }
                ++$this->fieldsPopularity[$fieldName][$inferredFieldType];
                arsort($this->fieldsPopularity[$fieldName]);
            }
        }
    }