@@ -210,10 +210,25 @@
  * @param key The key whose value should be returned
  * @return The value for the given key or `nil` if the key was not found
  */
 - (nullable id)valueForKey: (OFString*)key;
 
+/*!
+ * @brief Sets a value for a key.
+ *
+ * If the key starts with an `@`, the `@` is stripped and
+ * `[super setValue:forKey:]` is called.
+ * If the key does not start with an `@`, this is equivalent to
+ * @ref setObject:forKey:. In this case, if the dictionary is immutable, an
+ * @ref OFUndefinedKeyException is thrown.
+ *
+ * @param key The key to set
+ * @param value The value to set the key to
+ */
+- (void)setValue: (nullable id)value
+	  forKey: (OFString*)key;
+
 /*!
  * @brief Checks whether the dictionary contains an object equal to the
  *	  specified object.
  *
  * @param object The object which is checked for being in the dictionary