This is not a bug.

TODO

@@ -7,6 +7,4 @@ Below list contains things that should be changed/fixed/implemented.
 
 2. Some builtin functions like isset() seems to be useless, if variable is not defined, interpreter will throw an error.
 
-3. Accessing private attribute from parent class fails with 'Undefined class attribute' instead of error about visibility.
-
-4. Interpreter does not check if all methods match their signatures from interfaces and virtual classes.
+3. Interpreter does not check if all methods match their signatures from interfaces and virtual classes.