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.internal.operators.maybe;
  
  import org.reactivestreams.Publisher;
  
  import io.reactivex.rxjava3.core.MaybeSource;
  import io.reactivex.rxjava3.functions.Function;
  
  /**
   * Helper function to merge/concat values of each MaybeSource provided by a Publisher.
   */
  public enum MaybeToPublisher implements Function<MaybeSource<Object>, Publisher<Object>> {
      INSTANCE;
  
      @SuppressWarnings({ "rawtypes", "unchecked" })
      public static <T> Function<MaybeSource<T>, Publisher<T>> instance() {
          return (Function)INSTANCE;
      }
  
      @Override
      public Publisher<Object> apply(MaybeSource<Object> t) {
          return new MaybeToFlowable<>(t);
      }
  }
  