def pretty_inspect
      io = StringIO.new
      formatter = Formatter.new(io)
      pretty_dump(formatter)
      io.rewind
      io.read
    end
def pretty_inspect
      io = StringIO.new
      formatter = Formatter.new(io)
      pretty_dump(formatter)
      io.rewind
      io.read
    end
Return pretty inspection

 @return [String]

 @api private