import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

/**
 * A ScheduledExecutorService that executes all scheduled actions immediately in the calling thread.
 *
 * <p>See {@link TestingExecutors#sameThreadScheduledExecutor()} for a full list of constraints.
 *
 * @author John Sirois
 * @author Zach van Schouwen
 */
@GwtIncompatible

import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

/**
 * A ScheduledExecutorService that executes all scheduled actions immediately in the calling thread.
 *
 * <p>See {@link TestingExecutors#sameThreadScheduledExecutor()} for a full list of constraints.
 *
 * @author John Sirois
 * @author Zach van Schouwen
 */
@GwtIncompatible

     */
    protected void insertLogin(final Object member) {
        // nothing
    }

    /**
     * Checks if the current user has permission to access the given resource.
     * For admin actions, verifies that the user has appropriate admin roles or
     * meets the secured annotation requirements.
     *
     * @param resource the login handling resource to check permission for

    }

    /**
     * The action.
     */
    protected enum Action {
        /**
         * The login action.
         */
        LOGIN,
        /**
         * The logout action.
         */
        LOGOUT,
        /**
         * The access action.
         */
        ACCESS,
        /**
         * The login failure action.
         */
        LOGIN_FAILURE,

  </scm>
  <issueManagement>
    <system>GitHub Issues</system>
    <url>https://github.com/google/guava/issues</url>
  </issueManagement>
  <ciManagement>
    <system>GitHub Actions</system>
    <url>https://github.com/google/guava/actions</url>
  </ciManagement>
  <properties>
    <!--
    When building Guava, you can pass (e.g.) `-Dsurefire.toolchain.version=21` to change which version to run tests under.

  </scm>
  <issueManagement>
    <system>GitHub Issues</system>
    <url>https://github.com/google/guava/issues</url>
  </issueManagement>
  <ciManagement>
    <system>GitHub Actions</system>
    <url>https://github.com/google/guava/actions</url>
  </ciManagement>
  <properties>
    <!--
    When building Guava, you can pass (e.g.) `-Dsurefire.toolchain.version=21` to change which version to run tests under.

            FileNotifyInformation.FILE_ACTION_REMOVED_STREAM, FileNotifyInformation.FILE_ACTION_MODIFIED_STREAM })
    void testReadParametersWireFormatWithVariousActions(int action) throws Exception {
        byte[] buffer = createSingleNotificationBuffer("testfile.dat", action);

        int result = response.readParametersWireFormat(buffer, 0, buffer.length);

        assertTrue(result > 0);

   * call cancel() and be unable to cancel the delegate.
   * There are a number of ways to solve this, none of which are very pretty, and it is currently
   * believed to be a purely theoretical problem (since the other actions should supply sufficient
   * write-barriers).
   */

  @LazyInit private @Nullable ListenableFuture<V> delegateRef;
  @LazyInit private @Nullable ScheduledFuture<?> timer;

</p>
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    // you should remove the 'final' if you need to override this
    /**
     * Hook method called before action execution.
     * This method refreshes the user information if a user is logged in
     * and delegates to the view helper's action hook.
     *
     * @param runtime the action runtime context
     * @return the action response, or null to continue with normal processing
     */
    @Override