Hi,I have three questions about FairPlay.1. In FairPlayStreaming_PG.pdf on page 27, the document says that"In the code sample shown in the iOS FPS Client sample (included in the SDK),kTestAppCert contains the Application Certificate.".So I searched kTestAppCert, but kTestAppCert did not show up in the iOS FPS Client sample.Where does kTestAppCert appears and what is it?2. In FairPlayStreaming_PG.pdf page 26, the document says that"Do not hard-code the Application Certificate in the playback application".I would like to know a prefered way to store the Application Certificate.3. In SKDServer.c, line 1487, there is a 16 bit length key.If my understanding is correct, this is a content key and must be set a vaild key at this time.Is my understanding correct?Any advice and suggestions will be greatly appreciated.Thank you.