assertTrue(sw.toString().endsWith(RESULT2), msg);
    }

    private static final String RESULT3 = COMMENT + LINE_SEPARATOR + COMMENT + LINE_SEPARATOR + KEY1A + " = " + VALUE1
            + "\\" + LINE_SEPARATOR + VALUE1 + LINE_SEPARATOR;

    @Test
    public void testSaveComment3() throws Exception {
        properties.put(KEY1, List.of(new String[] {COMMENT, COMMENT}), List.of(new String[] {VALUE1, VALUE1}));

    /**
     * <code>line.separator</code> system property. For example, on Mac OS X: <code>"\n"</code>
     */
    public static final String LINE_SEPARATOR = System.getProperty("line.separator");

    /**
     * <code>path.separator</code> system property. For example, on Mac OS X: <code>":"</code>
     */

  /** File separator ("/" on UNIX). */
  FILE_SEPARATOR("file.separator"),

  /** Path separator (":" on UNIX). */
  PATH_SEPARATOR("path.separator"),

  /** Line separator ("\n" on UNIX). */
  LINE_SEPARATOR("line.separator"),

  /** User's account name. */
  USER_NAME("user.name"),

  /** User's home directory. */
  USER_HOME("user.home"),

  /** User's current working directory. */

  /** File separator ("/" on UNIX). */
  FILE_SEPARATOR("file.separator"),

  /** Path separator (":" on UNIX). */
  PATH_SEPARATOR("path.separator"),

  /** Line separator ("\n" on UNIX). */
  LINE_SEPARATOR("line.separator"),

  /** User's account name. */
  USER_NAME("user.name"),

  /** User's home directory. */
  USER_HOME("user.home"),

  /** User's current working directory. */

     * Unless standard java props, use UTF-8
     */
    static final String DEFAULT_ENCODING = StandardCharsets.UTF_8.name();

    /** Constant for the platform specific line separator.*/
    private static final String LINE_SEPARATOR = System.lineSeparator();

    /** Constant for the radix of hex numbers.*/
    private static final int HEX_RADIX = 16;

    /** Constant for the length of a unicode literal.*/

     * Unless standard java props, use UTF-8
     */
    static final Charset DEFAULT_ENCODING = StandardCharsets.UTF_8;

    /** Constant for the platform specific line separator.*/
    private static final String LINE_SEPARATOR = System.lineSeparator();

    /** Constant for the radix of hex numbers.*/
    private static final int HEX_RADIX = 16;

    /** Constant for the length of a unicode literal.*/

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.io;

import static com.google.common.base.StandardSystemProperty.LINE_SEPARATOR;
import static com.google.common.io.TestOption.CLOSE_THROWS;
import static com.google.common.io.TestOption.OPEN_THROWS;
import static com.google.common.io.TestOption.READ_THROWS;

 * the License.
 */

package com.google.common.io;

import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.StandardSystemProperty.LINE_SEPARATOR;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.io.BufferedWriter;

            try {
                if (item == null || item.getId() != oldItem.getId() || !item.isUpdated()) {
                    writer.write(oldItem.toLineString());
                    writer.write(Constants.LINE_SEPARATOR);
                    return oldItem;
                }
                if (!item.equals(oldItem)) {
                    throw new DictionaryException("Mapping file was updated: old=" + oldItem + " : new=" + item);

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.io;

import static com.google.common.base.StandardSystemProperty.LINE_SEPARATOR;
import static com.google.common.io.TestOption.CLOSE_THROWS;
import static com.google.common.io.TestOption.OPEN_THROWS;
import static com.google.common.io.TestOption.READ_THROWS;