src/Container.php
public function setAdapterOptionsFromString($optionString)
    {
        $this->adapterOptions = array_merge(
            $this->adapterOptions,
            explode(' ', $optionString)
        );
        return $this;
    }
public function setAdapterOptionsFromString($optionString)
    {
        $this->adapterOptions = array_merge(
            $this->adapterOptions,
            explode(' ', $optionString)
        );
        return $this;
    }
Options to pass to adapter's underlying command

@param string $optionString