Construct formatted body from replied event

Riot/Modules/MatrixKit/Utils/EventFormatter/MXKEventFormatter.h

@@ -240,6 +240,13 @@ typedef enum : NSUInteger {
  */
 - (NSAttributedString*)renderHTMLString:(NSString*)htmlString forEvent:(MXEvent*)event withRoomState:(MXRoomState*)roomState isEditMode:(BOOL)isEditMode;
 
+/**
+ Defines the replacement attributed string for a redacted message.
+
+ @return attributed string describing redacted message.
+ */
+- (NSAttributedString*)redactedMessageReplacementAttributedString;
+
 /**
  Same as [self renderString:forEvent:] but add a prefix.
  The prefix will be rendered with 'prefixTextFont' and 'prefixTextColor'.