Hide/Show methods for `layerId`

[vanhry]

Hello! Is it possible to add hide/show functionality for the leaflet layerId? I know that it's possible to implement this functionality with hideGroup and showGroup, but I use hideGroup and showGroup already for other objects on my map. E.g. hiding and showing markers, while group is been using for picker among polygons,markers,polylines Thank you for any help you can offer!