src/Support/ClassLoader.php
public function addDirectories($directories)
    {
        $this->directories = array_merge($this->directories, (array)$directories);

        $this->directories = array_unique($this->directories);
    }
public function addDirectories($directories)
    {
        $this->directories = array_merge($this->directories, (array)$directories);

        $this->directories = array_unique($this->directories);
    }
Add directories to the class loader.

@param  string|array $directories

@return void