toJson method
Implementation
String toJson() {
Map<String, dynamic> map = {};
map[ID] = id;
map[NAME] = name;
map[SIZE] = size;
map[FILLCOLOR] = fillcolor;
map[STROKECOLOR] = strokecolor;
map[FILLALPHA] = fillalpha;
map[STROKEALPHA] = strokealpha;
map[SHAPE] = shape;
map[WIDTH] = width;
map[LABELSIZE] = labelsize;
map[LABELFIELD] = labelfield;
map[LABELVISIBLE] = labelvisible;
map[ENABLED] = enabled;
map[ORDER] = order;
map[DASH] = dashPattern;
map[MINZOOM] = minZoom;
map[MAXZOOM] = maxZoom;
map[DECIMATION] = decimationFactor;
var json = JSON.jsonEncode(map);
return json;
}