class Prism::DotVisitor

def visit_block_argument_node(node)

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