Prism::DotVisitor#visit_global_variable_read_node

# File tmp/rubies/ruby-4.0.0/lib/prism/dot_visitor.rb, line 1975
    def visit_global_variable_read_node(node)
      table = Table.new("GlobalVariableReadNode")
      id = node_id(node)

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

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

      super
    end