code: /*
   * Copyright (c) 2019 the Eclipse Milo Authors
   *
   * This program and the accompanying materials are made
   * available under the terms of the Eclipse Public License 2.0
   * which is available at https://www.eclipse.org/legal/epl-2.0/
   *
   * SPDX-License-Identifier: EPL-2.0
   */
  
  package org.eclipse.milo.opcua.sdk.server.api;
  
  import java.util.Optional;
  
  import org.eclipse.milo.opcua.sdk.server.Session;
  
  public interface AccessContext {
  
      /**
       * Get the {@link Session} associated with this operation, if present.
       * <p>
       * If empty, the operation is internal and no user- or session-related restrictions should be applied.
       *
       * @return the {@link Session} associated with this operation, if present.
       */
      Optional<Session> getSession();
  
  }
  