Function clearSelection

clearSelection(layerId?): void
JMap.Map.Selection.clearSelection

Clear all selection.

If a layer id is provided, clear only the layer selection, else clear selection of all layers.
Parameters
- Optional layerId: JId
  The JMap layer id
Returns void
Throws
Error if a layer id is provided but not found

Example
```
// Clear selection of layer 4
JMap.Map.Selection.clearSelection(4)

// Clear selection of all layers
JMap.Map.Selection.clearSelection()
```