Add types to submodule.root.py

Author: Yobmod

git/objects/submodule/root.py

@@ -12,10 +12,13 @@
 
 # typing -------------------------------------------------------------------
 
-fromtypingimportTYPE_CHECKING
+fromtypingimportTYPE_CHECKING, Union
+
+fromgit.typesimportCommit_ish
 
 ifTYPE_CHECKING:
 fromgit.repoimportRepo
+fromgit.utilimportIterableList
 
 # ----------------------------------------------------------------------------
 
@@ -70,9 +73,11 @@ def _clear_cache(self) -> None:
 
 #{Interface
 
-defupdate(self, previous_commit=None, recursive=True, force_remove=False, init=True,
-to_latest_revision=False, progress=None, dry_run=False, force_reset=False,
-keep_going=False):
+defupdate(self, previous_commit: Union[Commit_ish, None] =None, # type: ignore[override]
+recursive: bool=True, force_remove: bool=False, init: bool=True,
+to_latest_revision: bool=False, progress: Union[None, 'RootUpdateProgress'] =None,
+dry_run: bool=False, force_reset: bool=False, keep_going: bool=False
+ ) ->'RootModule':
 """Update the submodules of this repository to the current HEAD commit.
  This method behaves smartly by determining changes of the path of a submodules
  repository, next to changes to the to-be-checked-out commit or the branch to be
@@ -137,8 +142,8 @@ def update(self, previous_commit=None, recursive=True, force_remove=False, init=
 previous_commit=repo.commit(previous_commit) # obtain commit object
 # END handle previous commit
 
-psms=self.list_items(repo, parent_commit=previous_commit)
-sms=self.list_items(repo)
+psms: 'IterableList[Submodule]'=self.list_items(repo, parent_commit=previous_commit)
+sms: 'IterableList[Submodule]'=self.list_items(repo)
 spsms=set(psms)
 ssms=set(sms)
 
@@ -171,8 +176,8 @@ def update(self, previous_commit=None, recursive=True, force_remove=False, init=
 csms= (spsms&ssms)
 len_csms=len(csms)
 fori, csminenumerate(csms):
-psm=psms[csm.name]
-sm=sms[csm.name]
+psm: 'Submodule'=psms[csm.name]
+sm: 'Submodule'=sms[csm.name]
 
 # PATH CHANGES
 ##############