docs: public synchronized boolean isLoaderFor(final ProviderIdent ident) {
          final String[] strings = getClassnames();
          for (final String classname : strings) {
              try {
                  if (matchesProviderDeclaration(ident, loadClass(classname))) {
                      return true;
                  }
              } catch (PluginException e) {
                  e.printStackTrace();
              }
          }
          return false;
      }