def to_s
      ptr = CF.CFDataGetBytePtr(self)
      if CF::String::HAS_ENCODING
        ptr.read_string(CF.CFDataGetLength(self)).force_encoding(Encoding::ASCII_8BIT)
      else
        ptr.read_string(CF.CFDataGetLength(self))
      end
    end
def to_s
      ptr = CF.CFDataGetBytePtr(self)
      if CF::String::HAS_ENCODING
        ptr.read_string(CF.CFDataGetLength(self)).force_encoding(Encoding::ASCII_8BIT)
      else
        ptr.read_string(CF.CFDataGetLength(self))
      end
    end
Creates a ruby string from the wrapped data. The encoding will always be ASCII_8BIT

 @return [String]