code: @Override
      protected synchronized void includeBaseLocation(String baseLocation) {
          _locations.add(baseLocation);
  
          // only do the processing if the cache has been read.
          if (_cacheRead) {
              File[] files = new File(_installDir, baseLocation).listFiles(new FileFilter() {
                  @Override
                  public boolean accept(File arg0) {
                      // select files only if they end .jar and they aren't in the cache already.
                      return arg0.getName().endsWith(".jar") && !!!_bundleLocations.contains(arg0);
                  }
              });
  
              if (files != null) {
                  for (File f : files) {
                      BundleInfo bInfo;
                      try {
                          bInfo = new BundleInfo(f, baseLocation);
                          if (bInfo.symbolicName != null) {
                              _dirty = true;
                              addToCache(bInfo);
                          }
                      } catch (IOException e) {
                      }
                  }
              }
          }
      }
docs: This method scans the provided location under the install dir. It looks at all the jar files in that directory
  and provided the file isn't in the cache it'll read the manifest and add it into memory.
  
  @param baseLocation the directory in the install to scan.