Figure 10- 70 [CKTranscriptController _startCreatingNewMessageForSending:]
Again, it’s a method full of branches. Overview the implementation, I think you’ll notice the
method “sendMessage:newComposition:” just like me. The method occurs twice in
[CKTranscriptController _startCreatingNewMessageForSending:], as shown in the 2 red blocks
in figure 10-71.