JMap.Layer.setLayerGroupExpansion
Set the layer group expansion state.
The JMap layer group id
if true will expand, if false will collapse the layer group
Error if layer group is not found, or is not a layer group but a layer
// Expand the layer group id -4JMap.Layer.setLayerGroupExpansion(-4, true) Copy
// Expand the layer group id -4JMap.Layer.setLayerGroupExpansion(-4, true)
JMap.Layer.setLayerGroupExpansion
Set the layer group expansion state.