import static org.junit.Assert.assertThrows;

import com.google.common.collect.ImmutableList;
import com.google.common.hash.Hashing;
import com.google.common.primitives.Bytes;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.RandomAccessFile;

    }

    /**
     * Wraps the writer with a {@link BufferedWriter} if necessary.
     *
     * @param writer the writer
     * @return the wrapped writer
     */
    protected static Writer wrap(final Writer writer) {
        if (writer instanceof BufferedWriter) {
            return writer;
        }
        if (writer instanceof StringWriter) {

   *     helpful predefined constants
   * @return the buffered writer
   */
  public static BufferedWriter newWriter(File file, Charset charset) throws FileNotFoundException {
    checkNotNull(file);
    checkNotNull(charset);
    return new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), charset));
  }

  /**

   *     helpful predefined constants
   * @return the buffered writer
   */
  public static BufferedWriter newWriter(File file, Charset charset) throws FileNotFoundException {
    checkNotNull(file);
    checkNotNull(charset);
    return new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), charset));
  }

  /**

    groupBy { it.targetType }


private
fun writeExtensionsTo(outputFile: File, packageName: String, targetType: ApiType, extensions: List<KotlinExtensionFunction>): Unit =
    outputFile.bufferedWriter().use { writer ->
        writer.write(fileHeaderFor(packageName, isIncubatingFileClass(targetType, extensions)))
        writer.write("\n")
        extensions.forEach {