visit_assoc

# File tools/rail_inspector/lib/rail_inspector/visitor/hash_to_string.rb, line 15
        def visit_assoc(node)
          @to_s << " "
          visit(node.key)

          case node.key
          when SyntaxTree::StringLiteral
            @to_s << " => "
          end

          visit(node.value)
        end