code: public File selectBaseBundle(String baseLocation, final String symbolicName, final VersionRange versionRange) {
          readCache();
          return selectResource(baseLocation, symbolicName, versionRange,
                                true, //performURICheck=true
                                true //selectBaseBundle=true
          );
      }
docs: This method can be used to obtain the 'base' bundle for a given 'selected' bundle.
  The {@link ContentBasedLocalBundleRepository#selectBundle} Will select a Bundle, which may or
  may not be an ifix.
  When the selectedBundle is an ifix, this method will return the corresponding bundle that has been 'ifixed'.
  If the selectedBundle is not an ifix, this method will return the selected bundle.
  
  @param baseLocation The base location.
  @param symbolicName The desired symbolic name.
  @param versionRange The range of versions that can be selected.
  @return The file representing the chosen bundle.