map method
Returns a new geometry collection with all geometries mapped using
toGeometry
.
If bounds object is available on this, then it's not recalculated and the returned object has it set null.
Implementation
GeometryCollection<E> map(E Function(E geometry) toGeometry) {
final mapped = geometries.map<E>(toGeometry).toList(growable: false);
final type = resolveCoordTypeFrom(collection: mapped);
return GeometryCollection<E>._(mapped, type);
}