to_utf8 (PDF::Reader::Font)

    # File lib/pdf/reader/font.rb, line 62
        def to_utf8(params)
          raise UnsupportedFeatureError, "font encoding '#{encoding}' currently unsupported" if encoding.kind_of?(String)

          if params.class == String
            # translate the bytestram into a UTF-8 string.
            # If an encoding hasn't been specified, assume the text using this
            # font is in Adobe Standard Encoding.
            (encoding || PDF::Reader::Encoding.new(:StandardEncoding)).to_utf8(params, tounicode)
          elsif params.class == Array
            params.collect { |param| self.to_utf8(param) }
          else
            params
          end
        end