src/Subjects/FilesystemTrait.php
public function mkdir($pathname, $mode = 0700, $recursive = false)
    {
        return $this->getFilesystemAdapter()->mkdir($pathname, $mode, $recursive);
    }
public function mkdir($pathname, $mode = 0700, $recursive = false)
    {
        return $this->getFilesystemAdapter()->mkdir($pathname, $mode, $recursive);
    }
Creates a new directroy.

@param string  $pathname  The directory path
@param integer $mode      The mode is 0777 by default, which means the widest possible access
@param string  $recursive Allows the creation of nested directories specified in the pathname

@return boolean TRUE on success, else FALSE
@link http://php.net/mkdir