*/
  @Override
  @CheckForNull
  protected final char[] escape(char c) {
    if (c < replacementsLength) {
      char[] chars = replacements[c];
      if (chars != null) {
        return chars;
      }
    }
    if (c >= safeMin && c <= safeMax) {
      return null;
    }
    return escapeUnsafe(c);
  }

  /**
   * Escapes a {@code char} value that has no direct explicit value in the replacement array and

  }
  return OkStatus();
}
Status TapeOperation::SetAttrString(const char* attr_name, const char* data,
                                    size_t length) {
  forward_op_.attrs.Set(attr_name, StringPiece(data, length));
  return parent_op_->SetAttrString(attr_name, data, length);
}
Status TapeOperation::SetAttrInt(const char* attr_name, int64_t value) {
  forward_op_.attrs.Set(attr_name, static_cast<int64_t>(value));

   * concat(new char[] {a, b}, new char[] {}, new char[] {c}} returns the array {@code {a, b, c}}.
   *
   * @param arrays zero or more {@code char} arrays
   * @return a single array containing all the values from the source arrays, in order
   */
  public static char[] concat(char[]... arrays) {
    int length = 0;
    for (char[] array : arrays) {
      length += array.length;
    }

-	  ((const char *) (src))[2], ((const char *) (src))[3],		      \
-	  ((const char *) (src))[4], ((const char *) (src))[5] } }),	      \
-     __extension__ ((__STRING2_COPY_ARR7)				      \
-      { { ((const char *) (src))[0], ((const char *) (src))[1],		      \
-	  ((const char *) (src))[2], ((const char *) (src))[3],		      \
-	  ((const char *) (src))[4], ((const char *) (src))[5],		      \

        "char_filter" : ["mapping_char"],
        "filter" : ["lowercase"]
      },
      "contents_analyzer_pa" : {
        "type" : "custom",
        "tokenizer" : "standard",
        "char_filter" : ["mapping_char"],
        "filter" : ["lowercase", "content_length_filter", "limit_token_count_filter"]
      },
      "contents_reading_analyzer_pa" : {
        "type" : "custom",
        "tokenizer" : "standard",

        "char_filter" : ["mapping_char"],
        "filter" : ["lowercase"]
      },
      "contents_analyzer_pa" : {
        "type" : "custom",
        "tokenizer" : "standard",
        "char_filter" : ["mapping_char"],
        "filter" : ["lowercase", "content_length_filter", "limit_token_count_filter"]
      },
      "contents_reading_analyzer_pa" : {
        "type" : "custom",
        "tokenizer" : "standard",

Status SetAttrString(AbstractOperation*, const char* attr_name,
                     const char* data, size_t length, ForwardOperation*);
Status SetAttrInt(AbstractOperation*, const char* attr_name, int64_t value,
                  ForwardOperation*);
Status SetAttrFloat(AbstractOperation*, const char* attr_name, float value,
                    ForwardOperation*);
Status SetAttrBool(AbstractOperation*, const char* attr_name, bool value,

          return escaper.escape((char) cp);
        }
        // Convert the code point to a surrogate pair and escape them both.
        // Note: This code path is horribly slow and typically allocates 4 new
        // char[] each time it is invoked. However this avoids any
        // synchronization issues and makes the escaper thread safe.
        char[] surrogateChars = new char[2];

    TFE_MonitoringStringGauge2* gauge, const char* label1, const char* label2) {
  return static_cast<TFE_MonitoringStringGaugeCell*>(
      static_cast<void*>(gauge->gauge->GetCell(label1, label2)));
}

TFE_MonitoringStringGauge3* TFE_MonitoringNewStringGauge3(
    const char* name, TF_Status* status, const char* description,
    const char* label1, const char* label2, const char* label3) {

                 int* num_retvals) override;
  Status SetAttrString(const char* attr_name, const char* data,
                       size_t length) override;
  Status SetAttrInt(const char* attr_name, int64_t value) override;
  Status SetAttrFloat(const char* attr_name, float value) override;
  Status SetAttrBool(const char* attr_name, bool value) override;
  Status SetAttrType(const char* attr_name, DataType value) override;