code: function resolveForVersion(version, platformID, opts) {
      opts = _.defaults(opts || {}, {
          // Order for filetype
          filePreference: ['.exe', '.dmg', '.deb', '.rpm', '.tgz', '.tar.gz', '.zip', '.nupkg'],
          wanted: null
      });
  
      // Prepare file prefs
      if (opts.wanted) opts.filePreference = _.uniq([opts.wanted].concat(opts.filePreference));
  
      // Normalize platform id
      platformID = detectPlatform(platformID);
  
      return _.chain(version.platforms)
          .filter(function(pl) {
              return pl.type.indexOf(platformID) === 0;
          })
          .sort(function(p1, p2) {
              var result = 0;
  
              // Compare by arhcitecture ("osx_64" > "osx")
              if (p1.type.length > p2.type.length) result = -1;
              else if (p2.type.length > p1.type.length) result = 1;
  
              // Order by file type if samee architecture
              if (result == 0) {
                  var ext1 = path.extname(p1.filename);
                  var ext2 = path.extname(p2.filename);
                  var pos1 = _.indexOf(opts.filePreference, ext1);
                  var pos2 = _.indexOf(opts.filePreference, ext2);
  
                  pos1 = pos1 == -1? opts.filePreference.length : pos1;
                  pos2 = pos2 == -1? opts.filePreference.length : pos2;
  
                  if (pos1 < pos2) result = -1;
                  else if (pos2 < pos1) result = 1;
              }
              return result;
          })
          .first()
          .value()
  }
docs: Resolve a platform for a version