Grease Pencil - Close stroke shortcut while drawing

It would be useful to have the start point and the end point of a stroke automatically be closing, while drawing and holding a shortcut.

The shortcut could be F, which isn't currently assigned to anything while drawing a stroke, and would be on par with closing a stroke / filing a polygonal hole, in Edit Mode.

It would look exactly like when drawing using a Fill material, where the start point and the end point are automatically closed using a straight line.

Instead of having to go to Edit Mode, selecting the points and pressing F, we could do it in Draw Mode while drawing the stroke. It would make for a faster workflow and for better results when using sculpting tools on seemingly closed strokes.