* @since 15.0 (in 14.0 with return type {@link BufferedOutputStream})
   */
  public OutputStream openBufferedStream() throws IOException {
    OutputStream out = openStream();
    return (out instanceof BufferedOutputStream)
        ? (BufferedOutputStream) out
        : new BufferedOutputStream(out);
  }

  /**
   * Writes all the given bytes to this sink.
   *

import groovy.lang.Closure;
import org.gradle.api.Action;
import org.gradle.api.GradleException;
import org.gradle.api.UnknownDomainObjectException;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

import org.gradle.api.file.FileSystemLocation
import org.gradle.api.provider.Provider
import org.gradle.api.tasks.Input
import org.gradle.api.tasks.PathSensitive
import org.gradle.api.tasks.PathSensitivity
import java.io.BufferedOutputStream
import java.io.File
import java.io.FileOutputStream
import java.util.jar.JarFile
import java.util.jar.JarOutputStream


@CacheableTransform
abstract class Minify : TransformAction<Minify.Parameters> {

    }

    /**
     * 必要があれば出力ストリームを{@link BufferedOutputStream}でラップします。
     *
     * @param os
     *            出力ストリーム
     * @return ラップされた出力ストリーム
     */
    protected static OutputStream wrap(final OutputStream os) {
        if (os instanceof BufferedOutputStream) {
            return os;
        }
        if (os instanceof ByteArrayOutputStream) {