(a) You must give any other recipients of the Work or
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      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

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  /*
   * This is overridden to improve performance. Rough benchmarking shows that this almost doubles
   * the speed when processing strings that do not require any escaping.
   */
  @Override
  public final String escape(String s) {
    checkNotNull(s); // GWT specific check (do not optimize).
    for (int i = 0; i < s.length(); i++) {
      char c = s.charAt(i);

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provided that You meet the following conditions:

You must give any other recipients of the Work or Derivative Works a copy of
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changed the files; and
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all copyright, patent, trademark, and attribution notices from the Source form

      (a) You must give any other recipients of the Work or
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