public function getPluginsWithHeader( $header ) {
		$plugins = get_plugins();
		$matches = [];
		foreach ( $plugins as $file => $plugin ) {
			if ( $plugin['Name'] === 'Pressbooks' ) {
				continue; // Fix Pluginception...
			}
			if ( ! empty( $plugin[ $header ] ) ) {
				$matches[ $file ] = $plugin;
			}
		}
		return $matches;
	}