recursive_getters 
            
            Property getter recursively returns itself.
This rule is available as of Dart 2.0.0.
Rule sets: recommended, flutter
Details
DON’T create recursive getters.
Recursive getters are getters which return themselves as a value. This is usually a typo.
BAD:
int get field => field; // LINT
BAD:
int get otherField {
  return otherField; // LINT
}
GOOD:
int get field => _field;
Usage
To enable the recursive_getters rule,
add recursive_getters under linter > rules in your
analysis_options.yaml
file:
linter:
  rules:
    - recursive_getters