def all_diff_commands_w3c
      result = compare_commands(@spec_commands, @implemented_w3c_commands)
      white_list.each { |v| result.delete v }
      mjsonwp_spec.each { |v| result.delete v }
      result
    end
def all_diff_commands_w3c
      result = compare_commands(@spec_commands, @implemented_w3c_commands)
      white_list.each { |v| result.delete v }
      mjsonwp_spec.each { |v| result.delete v }
      result
    end
All commands which haven't been implemented in ruby core library yet.
 @return [Hash]