code/SEO_Icons_SiteTree_DataExtension.php
public function updateMetadata(SiteConfig $config, SiteTree $owner, &$metadata)
    {

        //// HTML4 Favicon

        // @todo Perhaps create dynamic image, but just use favicon.ico for now

        //// Create Favicons

        $HTML5Favicon = $config->HTML5Favicon();
        $IOSPinicon = $config->IOSPinicon();
        $AndroidPinicon = $config->AndroidPinicon();
        $WindowsPinicon = $config->WindowsPinicon();

        //// iOS Pinicon

        if ($IOSPinicon->exists()) {
            $this->GenerateIOSPinicon($config, $owner, $metadata, $IOSPinicon);
        }

        //// HTML5 Favicon

        if ($HTML5Favicon->exists()) {
            $this->GenerateHTML5Favicon($owner, $metadata, $HTML5Favicon);
        }

        //// Android Pinicon Manifest

        if ($AndroidPinicon->exists()) {
            $this->GenerateAndroidPinicon($config, $owner, $metadata);
        }

        //// Windows Pinicon Manifest

        if ($WindowsPinicon->exists()) {
            $this->GenerateWindowsPinicon($config, $owner, $metadata, $WindowsPinicon);
        }

    }
public function updateMetadata(SiteConfig $config, SiteTree $owner, &$metadata)
    {

        //// HTML4 Favicon

        // @todo Perhaps create dynamic image, but just use favicon.ico for now

        //// Create Favicons

        $HTML5Favicon = $config->HTML5Favicon();
        $IOSPinicon = $config->IOSPinicon();
        $AndroidPinicon = $config->AndroidPinicon();
        $WindowsPinicon = $config->WindowsPinicon();

        //// iOS Pinicon

        if ($IOSPinicon->exists()) {
            $this->GenerateIOSPinicon($config, $owner, $metadata, $IOSPinicon);
        }

        //// HTML5 Favicon

        if ($HTML5Favicon->exists()) {
            $this->GenerateHTML5Favicon($owner, $metadata, $HTML5Favicon);
        }

        //// Android Pinicon Manifest

        if ($AndroidPinicon->exists()) {
            $this->GenerateAndroidPinicon($config, $owner, $metadata);
        }

        //// Windows Pinicon Manifest

        if ($WindowsPinicon->exists()) {
            $this->GenerateWindowsPinicon($config, $owner, $metadata, $WindowsPinicon);
        }

    }
Updates metadata with icons.

@param SiteConfig $config
@param SiteTree $owner
@param $metadata

@return void