Cake\ORM\Association\BelongsToMany::_options PHP Method

    protected function _options(array $opts)
    {
        $this->_externalOptions($opts);
        if (!empty($opts['targetForeignKey'])) {
            $this->targetForeignKey($opts['targetForeignKey']);
        }
        if (!empty($opts['joinTable'])) {
            $this->_junctionTableName($opts['joinTable']);
        }
        if (!empty($opts['through'])) {
            $this->_through = $opts['through'];
        }
        if (!empty($opts['saveStrategy'])) {
            $this->saveStrategy($opts['saveStrategy']);
        }
    }