Instance constructor
const
Instance({})
Create a new instance of Instance
name specifies the name of the runtime instance which will be create
for the Flutter instance of class Container, name would be Container
as well
properties specifies the properties set for the instance. e.g.,
the instance SizedBox(width: 20), would have one Property width.
Implementation
const Instance({
required this.name,
required this.properties,
this.trailingComma = true,
});