Expose transaction api

tjnetwork_new.py

@@ -49,7 +49,7 @@ def undo(name: str) -> None:
 def redo(name: str) -> None:
     return api.redo(name)
 
-def have_snapshot(name: str, tag: str) -> None:
+def have_snapshot(name: str, tag: str) -> bool:
     return api.have_snapshot(name, tag)
 
 def take_snapshot(name: str, tag: str) -> None:
@@ -58,6 +58,17 @@ def take_snapshot(name: str, tag: str) -> None:
 def pick_snapshot(name: str, tag: str) -> None:
     return api.pick_snapshot(name, tag)
 
+def have_transaction(name: str) -> bool:
+    return api.have_transaction(name)
+
+def start_transaction(name: str, strict: bool = False) -> None:
+    return api.start_transaction(name, strict)
+
+def commit_transaction(name: str) -> None:
+    return api.commit_transaction(name)
+
+def abort_transaction(name: str) -> None:
+    return api.abort_transaction(name)
 
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 # type