code: private void processUni2Byte(){
          IntHashtable uni2byte = getUni2Byte();
          int e[] = uni2byte.toOrderedKeys();
          
          cidbyte2uni = new char[256];
          for (int k = 0; k < e.length; ++k) {
              int n = uni2byte.get(e[k]);
              
              // this is messy, messy - an encoding can have multiple unicode values mapping to the same cid - we are going to arbitrarily choose the first one
              // what we really need to do is to parse the encoding, and handle the differences info ourselves.  This is a huge duplication of code of what is already
              // being done in DocumentFont, so I really hate to go down that path without seriously thinking about a change in the organization of the Font class hierarchy
              if (cidbyte2uni[n] == 0)
                  cidbyte2uni[n] = (char)e[k];
          }
      }
docs: Inverts DocumentFont's uni2byte mapping to obtain a cid-to-unicode mapping based
  on the font's encoding
  @since 2.1.7