deprecate predicates in protocols.qll that were only retained for backwards compatibility

Author: erik-krogh

python/ql/lib/semmle/python/protocols.qll

@@ -1,19 +1,19 @@
 import python
 
 /** Retained for backwards compatibility use ClassObject.isIterator() instead. */
-predicate is_iterator(ClassObject c) { c.isIterator() }
+deprecated predicate is_iterator(ClassObject c) { c.isIterator() }
 
 /** Retained for backwards compatibility use ClassObject.isIterable() instead. */
-predicate is_iterable(ClassObject c) { c.isIterable() }
+deprecated predicate is_iterable(ClassObject c) { c.isIterable() }
 
 /** Retained for backwards compatibility use ClassObject.isCollection() instead. */
-predicate is_collection(ClassObject c) { c.isCollection() }
+deprecated predicate is_collection(ClassObject c) { c.isCollection() }
 
 /** Retained for backwards compatibility use ClassObject.isMapping() instead. */
-predicate is_mapping(ClassObject c) { c.isMapping() }
+deprecated predicate is_mapping(ClassObject c) { c.isMapping() }
 
 /** Retained for backwards compatibility use ClassObject.isSequence() instead. */
-predicate is_sequence(ClassObject c) { c.isSequence() }
+deprecated predicate is_sequence(ClassObject c) { c.isSequence() }
 
 /** Retained for backwards compatibility use ClassObject.isContextManager() instead. */
-predicate is_context_manager(ClassObject c) { c.isContextManager() }
+deprecated predicate is_context_manager(ClassObject c) { c.isContextManager() }