class GraphQL::Upgrader::SkipOnNullKeyword

because it’s already been transformed
or ‘argument` helpers with `required:` keywords,
helpers with `null: true` or `null: false` keywords
Skip this file if you see any `field`

def skip?(input_text) 

def skip?(input_text)
  input_text =~ /field.*null: (true|false)/ || input_text =~ /argument.*required: (true|false)/
end