toDelta method
Implementation
@override
Delta toDelta() {
final delta = children
.map((child) => child.toDelta())
.fold(Delta(), (dynamic a, b) => a.concat(b));
var attributes = style;
if (parent is Block) {
final block = parent as Block;
attributes = attributes.mergeAll(block.style);
}
delta.insert('\n', attributes.toJson());
return delta;
}