Add typing that were lacking following refactor

See : 6721cd1cf2da0294124b75d382a042e23ec27d47

2 files changed, 9 insertions, 13 deletions

diff --git a/examples/deprecation_checker.py b/examples/deprecation_checker.py
index 03b8e3e36..fba6a54de 100644
--- a/examples/deprecation_checker.py
+++ b/examples/deprecation_checker.py
@@ -38,7 +38,7 @@ from module mymodule:
     ------------------------------------------------------------------
     Your code has been rated at 2.00/10 (previous run: 2.00/10, +0.00)
 """
-
+from typing import Set, Tuple
 
 from pylint.checkers import BaseChecker, DeprecatedMixin
 from pylint.interfaces import IAstroidChecker
@@ -56,7 +56,7 @@ class DeprecationChecker(DeprecatedMixin, BaseChecker):
     # The name defines a custom section of the config for this checker.
     name = "deprecated"
 
-    def deprecated_methods(self):
+    def deprecated_methods(self) -> Set:
         """Callback method called by DeprecatedMixin for every method/function found in the code.
 
         Returns:
@@ -64,7 +64,7 @@ class DeprecationChecker(DeprecatedMixin, BaseChecker):
         """
         return {"mymodule.deprecated_function", "mymodule.MyClass.deprecated_method"}
 
-    def deprecated_arguments(self, method: str):
+    def deprecated_arguments(self, method: str) -> Tuple:
         """Callback returning the deprecated arguments of method/function.
 
         Returns:
diff --git a/pylint/checkers/deprecated.py b/pylint/checkers/deprecated.py
index 358c88ee4..8fe491c15 100644
--- a/pylint/checkers/deprecated.py
+++ b/pylint/checkers/deprecated.py
@@ -2,7 +2,7 @@
 # For details: https://github.com/PyCQA/pylint/blob/master/COPYING
 
 """Checker mixin for deprecated functionality."""
-
+from collections.abc import Iterable
 from itertools import chain
 from typing import Any
 
@@ -39,20 +39,16 @@ class DeprecatedMixin:
         "deprecated-method",
         "deprecated-argument",
     )
-    def visit_call(self, node):
-        """Called when a :class:`.astroid.node_classes.Call` node is visited.
-
-        Args:
-            node (astroid.node_classes.Call): The node to check.
-        """
+    def visit_call(self, node: astroid.node_classes.Call) -> None:
+        """Called when a :class:`.astroid.node_classes.Call` node is visited."""
         try:
             for inferred in node.func.infer():
                 # Calling entry point for deprecation check logic.
                 self.check_deprecated_method(node, inferred)
         except astroid.InferenceError:
-            return
+            pass
 
-    def deprecated_methods(self):
+    def deprecated_methods(self) -> Iterable:
         """Callback returning the deprecated methods/functions.
 
         Returns:
@@ -61,7 +57,7 @@ class DeprecatedMixin:
         # pylint: disable=no-self-use
         return ()
 
-    def deprecated_arguments(self, method: str):
+    def deprecated_arguments(self, method: str) -> Iterable:
         """Callback returning the deprecated arguments of method/function.
 
         Args: