Prism::DotVisitor#visit_instance_variable_or_write_node

# File tmp/rubies/ruby-4.0.0/lib/prism/dot_visitor.rb, line 2503
    def visit_instance_variable_or_write_node(node)
      table = Table.new("InstanceVariableOrWriteNode")
      id = node_id(node)

      # name
      table.field("name", node.name.inspect)

      # name_loc
      table.field("name_loc", location_inspect(node.name_loc))

      # operator_loc
      table.field("operator_loc", location_inspect(node.operator_loc))

      # value
      table.field("value", port: true)
      digraph.edge("#{id}:value -> #{node_id(node.value)};")

      digraph.nodes << <<~DOT
        #{id} [
          label=<#{table.to_dot.gsub(/\n/, "\n  ")}>
        ];
      DOT

      super
    end