Effective Dart "DO type annotate fields and top-level variables ..." example uses a method

[srawlins]

The bad example, and the first example, under "DO type annotate fields and top-level variables if the type isn't obvious
" use a method, and don't contain a field or top-level variable anywhere.

And none of the text in the rule can really apply to methods, unless you maybe count a method with an expression body (=> ...) as "having" an "obvious type".

[srawlins]

Or looked at the other way, maybe the method example, specifically the return type, hints that the text of the rule should be changed to include methods ("DO type annotate fields, top-level variables, enum values, functions, methods, constructors, and typedefs ...")