39 @interface Source : SourceBase  interface
48 @implementation Source  implementation
56   [super randomMethod];  // Source randomMethod start line.
57     printf ("Called in Source version of random method.");
62   printf ("Called in Source version of returnsStruct.\n");  // Source returnsStruct start line.
63   return [super returnsStruct];                             // Source returnsStruct call line.  
70   Source *_source;
72 + (Observer *) observerWithSource: (Source *) source;  argument
73 - (Observer *) initWithASource: (Source *) source;  argument
82 + (Observer *) observerWithSource: (Source *) inSource;  argument
90 - (Observer *) initWithASource: (Source *) source
113   Source *mySource;
119   mySource = [[Source alloc] init];