class Prism::DotVisitor

def visit_parentheses_node(node)

Visit a ParenthesesNode node. 
def visit_parentheses_node(node)
  table = Table.new("ParenthesesNode")
  id = node_id(node)
  # body
  unless (body = node.body).nil?
    table.field("body", port: true)
    digraph.edge("#{id}:body -> #{node_id(body)};")
  end
  # opening_loc
  table.field("opening_loc", location_inspect(node.opening_loc))
  # closing_loc
  table.field("closing_loc", location_inspect(node.closing_loc))
  digraph.nodes << <<~DOT
    #{id} [
      label=<#{table.to_dot.gsub(/\n/, "\n  ")}>
    ];
  DOT
  super
end