app/Ux/Settings/Tabs.php
public function make($name, $view, $icon, callable $displayable = null)
    {
        return new Tab($name, $view, $icon, $displayable);
    }
public function make($name, $view, $icon, callable $displayable = null)
    {
        return new Tab($name, $view, $icon, $displayable);
    }
Create a new custom tab instance.

@param  string  $name
@param  string  $view
@param  string  $icon
@return \Laravel\Spark\Ux\Settings\Tab