src/Jackiedo/DotenvEditor/DotenvEditor.php
public function setKey($key, $value = null, $comment = null, $export = false)
    {
        $data = [compact('key', 'value', 'comment', 'export')];

        return $this->setKeys($data);
    }
public function setKey($key, $value = null, $comment = null, $export = false)
    {
        $data = [compact('key', 'value', 'comment', 'export')];

        return $this->setKeys($data);
    }
Set one key to buffer

@param string       $key      Key name of setter
@param string|null  $value    Value of setter
@param string|null  $comment  Comment of setter
@param boolean      $export   Leading key name by "export "

@return DotenvEditor