Where to position the panel. Currently, only "sibling" is supported which indicates the new panel will be adjacent to the calling panel.
The type of panel to open. For extension panels, this "extensionName.panelName"
where
extensionName is the name
field from the extension's package.json, and panelName is the
name provided to registerPanel()
.
Optional
updateWhether to update an existing sibling panel of the same type, if it already exists. If false or omitted, a new panel will always be added.
This parameter is only supported for built-in panels at this time.
Open a new panel or update an existing panel in the layout.