1   /* Copyright 2002-2025 CS GROUP
2    * Licensed to CS GROUP (CS) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * CS licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *   http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.orekit.time;
18  
19  import org.hipparchus.CalculusFieldElement;
20  
21  /** This interface represents objects that can be shifted in time.
22   * @param <T> Type of the object.
23   * @param <KK> type of the field elements
24   * @author Luc Maisonobe
25   * @since 9.0
26   */
27  public interface FieldTimeShiftable<T extends FieldTimeShiftable<T, KK>, KK extends CalculusFieldElement<KK>>
28          extends TimeShiftable<T> {
29  
30      /** Get a time-shifted instance.
31       * @param dt time shift in seconds
32       * @return a new instance, shifted with respect to instance (which is not changed)
33       */
34      T shiftedBy(KK dt);
35  
36  }