diff --git a/ocp_resources/backup.py b/ocp_resources/backup.py
index 460de31681..4bf8dd556a 100644
--- a/ocp_resources/backup.py
+++ b/ocp_resources/backup.py
@@ -5,48 +5,31 @@
 
 class Backup(NamespacedResource):
     """
-    Backup object.
+    Backup in 'velero' official API:
+        https://velero.io/docs/v0.7.1/api-types/backup/
     """
 
     api_group = NamespacedResource.ApiGroup.VELERO_IO
 
-    def __init__(
-        self,
-        name=None,
-        namespace=None,
-        included_namespaces=None,
-        client=None,
-        teardown=False,
-        privileged_client=None,
-        yaml_file=None,
-        excluded_resources=None,
-        **kwargs,
-    ):
-        if not included_namespaces:
-            raise ValueError("included_namespaces can't be None")
-
-        super().__init__(
-            name=name,
-            namespace=namespace,
-            client=client,
-            teardown=teardown,
-            privileged_client=privileged_client,
-            yaml_file=yaml_file,
-            **kwargs,
-        )
+    def __init__(self, included_namespaces=None, excluded_resources=None, **kwargs):
+        """
+        Args:
+            included_namespaces (list, optional): Namespaces to include in the backup.
+                If unspecified, all namespaces are included.
+            excluded_resources (list, optional): Resources to exclude from the backup.
+                Resources may be shortcuts (e.g. 'po' for 'pods') or fully-qualified.
+        """
+        super().__init__(**kwargs)
         self.included_namespaces = included_namespaces
         self.excluded_resources = excluded_resources
 
     def to_dict(self):
         super().to_dict()
         if not self.yaml_file:
-            self.res.update(
-                {
-                    "spec": {
-                        "includedNamespaces": self.included_namespaces,
-                    }
-                }
-            )
-
+            spec_dict = {}
+            if self.included_namespaces:
+                spec_dict.update({"includedNamespaces": self.included_namespaces})
             if self.excluded_resources:
-                self.res["spec"]["excludedResources"] = self.excluded_resources
+                spec_dict.update({"excludedResources": self.excluded_resources})
+            if spec_dict:
+                self.res.update({"spec": spec_dict})
diff --git a/ocp_resources/cluster_role.py b/ocp_resources/cluster_role.py
index fd121f5f2c..0740b3dfc3 100644
--- a/ocp_resources/cluster_role.py
+++ b/ocp_resources/cluster_role.py
@@ -1,51 +1,29 @@
 # -*- coding: utf-8 -*-
-from ocp_resources.constants import TIMEOUT_4MINUTES
 from ocp_resources.resource import Resource
 
 
 class ClusterRole(Resource):
     """
-    ClusterRole object
+    ClusterRole in kubernetes 'authorization-resources' official API:
+        https://kubernetes.io/docs/reference/kubernetes-api/authorization-resources/cluster-role-v1/
     """
 
     api_group = Resource.ApiGroup.RBAC_AUTHORIZATION_K8S_IO
 
-    def __init__(
-        self,
-        name=None,
-        client=None,
-        rules=None,
-        teardown=True,
-        yaml_file=None,
-        delete_timeout=TIMEOUT_4MINUTES,
-        **kwargs,
-    ):
+    def __init__(self, rules=None, **kwargs):
         """
         Args:
-            name (str): Role name.
-            client (DynamicClient): DynamicClient to use.
             rules (list): list of dicts of rules. In the dict:
                 permissions_to_resources (list): List of string with resource/s to which you want to add permissions to.
                 Verbs (list): Determine the action/s (permissions) applicable on a specific resource.
                     Available verbs per resource can be seen with the command 'oc api-resources --sort-by name -o wide'
-            teardown (bool, default: True): Indicates if this resource would need to be deleted.
-            yaml_file (yaml, default: None): yaml file for the resource.
-            delete_timeout (int, default: 4 minutes): timeout associated with delete action.
         """
-        super().__init__(
-            client=client,
-            name=name,
-            teardown=teardown,
-            yaml_file=yaml_file,
-            delete_timeout=delete_timeout,
-            **kwargs,
-        )
+        super().__init__(**kwargs)
         self.rules = rules
 
     def to_dict(self):
-        if not self.rules and not self.yaml_file:
-            raise ValueError("must send rules or yaml_file")
-        if not self.res:
-            super().to_dict()
+        super().to_dict()
         if not self.yaml_file:
+            if not self.rules:
+                raise ValueError("must send rules or yaml_file")
             self.res["rules"] = self.rules