code: /*
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.rxjava3.core;
  
  /**
   * Represents the options for applying backpressure to a source sequence.
   */
  public enum BackpressureStrategy {
      /**
       * The {@code onNext} events are written without any buffering or dropping.
       * Downstream has to deal with any overflow.
       * <p>Useful when one applies one of the custom-parameter onBackpressureXXX operators.
       */
      MISSING,
      /**
       * Signals a {@link io.reactivex.rxjava3.exceptions.MissingBackpressureException MissingBackpressureException}
       * in case the downstream can't keep up.
       */
      ERROR,
      /**
       * Buffers <em>all</em> {@code onNext} values until the downstream consumes it.
       */
      BUFFER,
      /**
       * Drops the most recent {@code onNext} value if the downstream can't keep up.
       */
      DROP,
      /**
       * Keeps only the latest {@code onNext} value, overwriting any previous value if the
       * downstream can't keep up.
       */
      LATEST
  }
  