ObjFW  Diff

 * @ref setValue:forKey: is called for each object.
 *
 * @note A @ref OFNull value is translated to nil!
 *
 * @param value The value for the specified key
 * @param key The key of the value to set
 */
- (void)setValue: (nullable id)value
- (void)setValue: (nullable id)value forKey: (OFString *)key;
	  forKey: (OFString *)key;

#ifdef OF_HAVE_BLOCKS
/**
 * @brief Executes a block for each object in the set.
 *
 * @param block The block to execute for each object in the set
 */