parse method
Implementation
Future<MetaDescription> parse(TopLevelVariableElement meta) async {
final visitor = MetaVisitor();
final getter = meta.getter!;
final ast = getter.hasImplicitReturnType
? await resolver.astNodeFor(meta.firstFragment, resolve: true)
: await resolver.astNodeFor(meta.getter!.firstFragment, resolve: true);
ast?.visitChildren(visitor);
return MetaDescription(
widget: visitor.componentArgument ?? visitor.componentGeneric,
);
}