content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements. See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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 org.apache.kafka.common.utils;
  
  import java.util.Iterator;
  import java.util.function.Function;
  
  /**
   * An iterator that maps another iterator's elements from type `F` to type `T`.
   */
  public final class MappedIterator<F, T> implements Iterator<T> {
      private final Iterator<? extends F> underlyingIterator;
      private final Function<F, T> mapper;
  
      public MappedIterator(Iterator<? extends F> underlyingIterator, Function<F, T> mapper) {
          this.underlyingIterator = underlyingIterator;
          this.mapper = mapper;
      }
  
      @Override
      public boolean hasNext() {
          return underlyingIterator.hasNext();
      }
  
      @Override
      public T next() {
          return mapper.apply(underlyingIterator.next());
      }
  
  }
  