Protected ReadonlyloggerProtected ReadonlymodelProtected ReadonlyquickProtected ReadonlyscmProtected ReadonlyscmProtectedhistoryProtectedmodelThe graph model, resolved lazily: instantiating it starts loading
history, so it must only be resolved when a graph command actually
runs or the graph toolbar renders (the widget has created the model
by then). In particular, isEnabled/isVisible are also queried by
the command palette and therefore consult the ScmService instead.
ProtectedcreateProtectedpickProtectedto
Contributes the native toolbar actions of the SCM history graph: the history item reference filter picker (VS Code's "Auto" dropdown) and the refresh action. Extension actions (e.g. fetch/pull/push from vscode.git) are contributed separately via the
scm/history/titlemenu.