// Copyright (c) 2017, the R8 project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
package naming001;

public class J {
  int[][][] m5(int a, boolean b, long c) {
    return null;
  }

  int[][][] m3() {
    return null;
  }

  int[][] m2() {
    return null;
  }

  int[] m1() {
    return null;
  }

  int m0() {
    return 0;
  }

  int[][][] m() {
    return null;
  }
}

