```
[] ~/projects/jruby $ cat hash.rb
h = {
  foo: 1,
  bar: 2,
  baz: 3
}

[] ~/projects/jruby $ jruby -rcoverage -e 'p Coverage.line_stub("hash.rb")'
[0, nil, nil, nil, nil]

[] ~/projects/jruby $ rvm ruby-2.6.5 do ruby -rcoverage -e 'p Coverage.line_stub("hash.rb")'
[nil, 0, nil, nil, nil]
```