lib/components/dataInterface/DataSource.php
public function getTotal()
    {
        if (!$this->isReady()) {
            return 0;
        }
        if (is_null($this->_countTotal)) {
            $this->_countTotal = 0;
            if (in_array($this->settings['direction'], ['to_local', 'both'])) {
                $this->_countTotal += count($this->foreignDataItems);
            }

            if (in_array($this->settings['direction'], ['to_foreign', 'both'])) {
                $this->_countTotal += count($this->localDataItems);
            }
        }

        return $this->_countTotal;
    }
public function getTotal()
    {
        if (!$this->isReady()) {
            return 0;
        }
        if (is_null($this->_countTotal)) {
            $this->_countTotal = 0;
            if (in_array($this->settings['direction'], ['to_local', 'both'])) {
                $this->_countTotal += count($this->foreignDataItems);
            }

            if (in_array($this->settings['direction'], ['to_foreign', 'both'])) {
                $this->_countTotal += count($this->localDataItems);
            }
        }

        return $this->_countTotal;
    }
Get total.

@return [[@doctodo return_type:getTotal]] [[@doctodo return_description:getTotal]]