code: @Restricted(NoExternalUse.class)
      public List<Future<UpdateCenter.UpdateCenterJob>> install(@Nonnull Collection<String> plugins, boolean dynamicLoad) {
          return install(plugins, dynamicLoad, null);
      }
docs: Performs the installation of the plugins.
  @param plugins The collection of plugins to install.
  @param dynamicLoad If true, the plugin will be dynamically loaded into this Jenkins. If false,
  the plugin will only take effect after the reboot.
  See {@link UpdateCenter#isRestartRequiredForCompletion()}
  @return The install job list.
  @since 2.0