Add some missing docstrings

Author: akx

upcloud_api/cloud_manager/base.py

@@ -14,6 +14,9 @@ class BaseAPI:
     api_v = '1.3'
 
     def __init__(self, token, timeout=None):
+        """
+        Initialize the API with a given Authorization token and default timeout.
+        """
         self.token = token
         self.timeout = timeout
 

upcloud_api/errors.py

@@ -17,6 +17,9 @@ class UpCloudAPIError(UpCloudClientError):
     """
 
     def __init__(self, error_code, error_message):
+        """
+        Initialize API error with an error code and message.
+        """
         self.error_code = error_code
         self.error_message = error_message
 

upcloud_api/server.py

@@ -141,6 +141,9 @@ def save(self):
         self._reset(kwargs)
 
     def destroy(self):
+        """
+        Destroy the server.
+        """
         self.cloud_manager.delete_server(self.uuid)
 
     def shutdown(self, hard=False, timeout=30):
@@ -258,6 +261,9 @@ def add_firewall_rule(self, FirewallRule):
         return self.cloud_manager.create_firewall_rule(self, FirewallRule.to_dict())
 
     def remove_firewall_rule(self, FirewallRule):
+        """
+        Remove a firewall rule.
+        """
         return FirewallRule.destroy()
 
     def get_firewall_rules(self):

upcloud_api/tag.py

@@ -47,6 +47,9 @@ def server_uuids(self):
         return [server.uuid for server in self.servers]
 
     def save(self):
+        """
+        Save any changes made to the tag.
+        """
         tag_dict = self.cloud_manager._modify_tag(
             self._api_name, self.description, self.server_uuids, self.name
         )