Use callable method parameter

Gets better IDE support and doesn't report the methods as unused

packages/framework/src/Support/Includes.php

@@ -66,7 +66,7 @@ public static function get(string $filename, ?string $default = null): ?string
      */
     public static function html(string $filename, ?string $default = null): ?HtmlString
     {
-        return static::getInclude('renderHtml', '.html', $default, $filename);
+        return static::getInclude([static::class, 'renderHtml'], '.html', $default, $filename);
     }
 
     /**
@@ -78,7 +78,7 @@ public static function html(string $filename, ?string $default = null): ?HtmlStr
      */
     public static function markdown(string $filename, ?string $default = null): ?HtmlString
     {
-        return static::getInclude('renderMarkdown', '.md', $default, $filename);
+        return static::getInclude([static::class, 'renderMarkdown'], '.md', $default, $filename);
     }
 
     /**
@@ -90,7 +90,7 @@ public static function markdown(string $filename, ?string $default = null): ?Htm
      */
     public static function blade(string $filename, ?string $default = null): ?HtmlString
     {
-        return static::getInclude('renderBlade', '.blade.php', $default, $filename);
+        return static::getInclude([static::class, 'renderBlade'], '.blade.php', $default, $filename);
     }
 
     protected static function normalizePath(string $filename, string $extension): string
@@ -122,7 +122,7 @@ protected static function getFileContents(string $path): ?string
         return Filesystem::get($path);
     }
 
-    protected static function getInclude(string $method, string $extension, ?string $default, string $filename): ?HtmlString
+    protected static function getInclude(callable $method, string $extension, ?string $default, string $filename): ?HtmlString
     {
         $path = static::normalizePath($filename, $extension);
         $contents = static::getFileContents($path);
@@ -131,6 +131,6 @@ protected static function getInclude(string $method, string $extension, ?string
             return null;
         }
 
-        return static::$method($contents ?? $default);
+        return $method($contents ?? $default);
     }
 }