diff --git a/include/utils/String8.h b/include/utils/String8.h
index 6abfb06..6b49ff5 100644
--- a/include/utils/String8.h
+++ b/include/utils/String8.h
@@ -47,7 +47,12 @@
     explicit                    String8(const char32_t* o);
     explicit                    String8(const char32_t* o, size_t numChars);
                                 ~String8();
-    
+
+    static inline const String8 empty();
+
+    static String8              format(const char* fmt, ...) __attribute__((format (printf, 1, 2)));
+    static String8              formatV(const char* fmt, va_list args);
+
     inline  const char*         string() const;
     inline  size_t              size() const;
     inline  size_t              length() const;
@@ -229,6 +234,10 @@
     return compare_type(lhs, rhs) < 0;
 }
 
+inline const String8 String8::empty() {
+    return String8();
+}
+
 inline const char* String8::string() const
 {
     return mString;