unnecessary_underscores

Unnecessary underscores can be removed.

AVOID using multiple underscores when a single wildcard will do.

BAD:

void function(int __) { } 

GOOD:

void function(int _) { } 

To enable the unnecessary_underscores rule, add unnecessary_underscores under linter > rules in your analysis_options.yaml file:

linter:  rules:  - unnecessary_underscores 

If you're instead using the YAML map syntax to configure linter rules, add unnecessary_underscores: true under linter > rules:

linter:  rules:  unnecessary_underscores: true