@JvmName("-deprecated_getHeaders")
  @Deprecated(
    message = "moved to var",
    replaceWith = ReplaceWith(expression = "headers"),
    level = DeprecationLevel.ERROR,
  )
  fun getHeaders(): Headers = headers

  fun setHeaders(headers: Headers) = apply { this.headers = headers }

  @JvmName("-deprecated_getTrailers")
  @Deprecated(
    message = "moved to var",
    replaceWith = ReplaceWith(expression = "trailers"),

     * @param mode
     *            The mode. Must not be {@literal null}.
     * @return A {@link ByteBuffer} that maps the file channel to memory.
     */
    public static ByteBuffer map(final FileChannel channel, final MapMode mode) {
        assertArgumentNotNull("channel", channel);
        assertArgumentNotNull("mode", mode);

        try {

errors.not_found_on_file_system = Not found. Cause: {0}
errors.could_not_open_on_system = Could not open {0}.<br>Please check if the file is associated with an application.
errors.result_size_exceeded = No more results can be displayed.
errors.target_file_does_not_exist = The file {0} does not exist.
errors.failed_to_delete_file = Failed to delete the file {0}.
errors.docid_not_found = Doc ID is not found. Cause: {0}

errors.not_found_on_file_system = Not found. Cause: {0}
errors.could_not_open_on_system = Could not open {0}.<br>Please check if the file is associated with an application.
errors.result_size_exceeded = No more results can be displayed.
errors.target_file_does_not_exist = The file {0} does not exist.
errors.failed_to_delete_file = Failed to delete the file {0}.
errors.docid_not_found = Doc ID is not found. Cause: {0}

@REM Licensed to the Apache Software Foundation (ASF) under one
@REM or more contributor license agreements.  See the NOTICE file
@REM distributed with this work for additional information
@REM regarding copyright ownership.  The ASF licenses this file
@REM to you under the Apache License, Version 2.0 (the
@REM "License"); you may not use this file except in compliance
@REM with the License.  You may obtain a copy of the License at
@REM

            }
        }

        if (maximals.size() > 1) {
            // We have more than one maximally specific method
            throw new AmbiguousException();
        }

        return maximals.getFirst();
    }

    /**
     * Determines which method signature (represented by a class array) is more
     * specific. This defines a partial ordering on the method signatures.
     *

**Implementation Details**

See the GSA parser implementation: [GsaConfigParser.java](/src/main/java/org/codelibs/fess/util/GsaConfigParser.java)

#### API Compatibility Mode

/*
 * 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
 *

   * expect a newly-started thread to call [Runnable.run]. We shouldn't request new threads until
   * the already-requested ones are in service, otherwise we might create more threads than we need.
   *
   * We use [executeCallCount] and [runCallCount] to defend against starting more threads than we
   * need. Both fields are guarded by `this`.
   */
  private var executeCallCount = 0
  private var runCallCount = 0

 *
 * <p>Occasionally, an API will return a plain {@code Future} and it will be impossible to change
 * the return type. For this case, we provide a more expensive workaround in {@code
 * JdkFutureAdapters}. However, when possible, it is more efficient and reliable to create a {@code
 * ListenableFuture} directly.
 *
 * @author Sven Mawson
 * @author Nishant Thakkar
 * @since 1.0
 */
/*