src/includes/classes/Core/Utils/Url.php
public function toAppCore(string $uri = '', string $scheme = '', bool $cdn_filter = true): string
    {
        if ($this->App->Parent) { // Looking for the root core.
            return $this->App->Parent->Utils->©Url->toAppCore($uri, $scheme, $cdn_filter);
        }
        return $this->toApp($uri, $scheme, $cdn_filter);
    }
public function toAppCore(string $uri = '', string $scheme = '', bool $cdn_filter = true): string
    {
        if ($this->App->Parent) { // Looking for the root core.
            return $this->App->Parent->Utils->©Url->toAppCore($uri, $scheme, $cdn_filter);
        }
        return $this->toApp($uri, $scheme, $cdn_filter);
    }
Build app core URL.

@since 151121 URL utilities.

@param string $uri        URI to append.
@param string $scheme     Specific scheme?
@param bool   $cdn_filter CDN filter?

@return string Output URL.