# File lib/code_analyzer/sexp.rb, line 587
  def hash_value(key)
    pair_nodes = case sexp_type
                 when :bare_assoc_hash
                   self[1]
                 when :hash
                   self[1][1]
                 else
                 end
    if pair_nodes
      pair_nodes.size.times do |i|
        if key == pair_nodes[i][1].to_s
          return pair_nodes[i][2]
        end
      end
    end
    CodeAnalyzer::Nil.new
  end