writeLines(lines, System.getProperty("line.separator"));
  }

  /**
   * Writes the given lines of text to this sink with each line (including the last) terminated with
   * the given line separator.
   *
   * @throws IOException if an I/O error occurs while writing to this sink
   */
  public void writeLines(Iterable<? extends CharSequence> lines, String lineSeparator)

 * <p>Several methods in this class, such as {@link #readLines()}, break the contents of the source
 * into lines. Like {@link BufferedReader}, these methods break lines on any of {@code \n}, {@code
 * \r} or {@code \r\n}, do not include the line separator in each line and do not consider there to
 * be an empty line at the end if the contents are terminated with a line separator.
 *

    TestCharSource lines = new TestCharSource(LINES);
    assertEquals("foo", lines.readFirstLine());
    assertTrue(lines.wasStreamOpened() && lines.wasStreamClosed());
  }

  public void testReadLines_toList() throws IOException {
    TestCharSource lines = new TestCharSource(LINES);
    assertEquals(ImmutableList.of("foo", "bar", "baz", "something"), lines.readLines());

    }
    lineBuf.finish();
    return lines;
  }

  private static List<String> readUsingJava(String input, int chunk) throws IOException {
    BufferedReader r = new BufferedReader(getChunkedReader(input, chunk));
    List<String> lines = Lists.newArrayList();
    String line;
    while ((line = r.readLine()) != null) {
      lines.add(line);
    }
    r.close();
    return lines;
  }

    }
    lineBuf.finish();
    return lines;
  }

  private static List<String> readUsingJava(String input, int chunk) throws IOException {
    BufferedReader r = new BufferedReader(getChunkedReader(input, chunk));
    List<String> lines = Lists.newArrayList();
    String line;
    while ((line = r.readLine()) != null) {
      lines.add(line);
    }
    r.close();
    return lines;
  }

    TestCharSource lines = new TestCharSource(LINES);
    assertEquals("foo", lines.readFirstLine());
    assertTrue(lines.wasStreamOpened() && lines.wasStreamClosed());
  }

  public void testReadLines_toList() throws IOException {
    TestCharSource lines = new TestCharSource(LINES);
    assertEquals(ImmutableList.of("foo", "bar", "baz", "something"), lines.readLines());

  }

  /**
   * Streams lines from a URL, stopping when our callback returns false, or we have read all of the
   * lines.
   *
   * @param url the URL to read from
   * @param charset the charset used to decode the input stream; see {@link StandardCharsets} for
   *     helpful predefined constants
   * @param callback the LineProcessor to use to handle the lines
   * @return the output of processing the lines

                }
                valueLines.add(line);
                while (line.length() > 0 && contains(WHITE_SPACE, line.charAt(0))) {
                    line = line.substring(1, line.length());
                }
                buffer.append(line);
                if (!combine) {
                    break;
                }
            }
            return buffer.toString();

The [strings] package adds several functions that work with iterators:
- [Lines] returns an iterator over
  the newline-terminated lines in the string s.
- [SplitSeq] returns an iterator over
  all substrings of s separated by sep.
- [SplitAfterSeq] returns an iterator
  over substrings of s split after each instance of sep.
- [FieldsSeq] returns an iterator over
  substrings of s split around runs of whitespace characters,
  as defined by unicode.IsSpace.

The [bytes] package adds several functions that work with iterators:
- [Lines] returns an iterator over the
  newline-terminated lines in the byte slice s.
- [SplitSeq] returns an iterator over
  all substrings of s separated by sep.
- [SplitAfterSeq] returns an iterator
  over substrings of s split after each instance of sep.
- [FieldsSeq] returns an iterator over
  substrings of s split around runs of whitespace characters,
  as defined by unicode.IsSpace.