class RuboCop::Cop::Style::QuotedSymbols

def autocorrect(corrector, node)
  str = if hash_colon_key?(node)
          # strip quotes
          correct_quotes(node.source[1..-2])
        else
          # strip leading `:` and quotes
          ":#{correct_quotes(node.source[2..-2])}"
        end
  corrector.replace(node, str)
end