def foo end def bar(n) end def baz(n=1) end def qux(a,n=1) end __END__ # Errors smoke/wrong-rbs.rb:1: [error] RBS says that the arity may be 1, but the method definition requires at most 0 arguments smoke/wrong-rbs.rb:3: [error] RBS says that the arity may be 0, but the method definition requires at least 1 arguments # Classes