public Builder setTotalCharacters(long value) {

      totalCharacters_ = value;
      bitField0_ |= 0x00000020;
      onChanged();
      return this;
    }
<pre>
Total number of characters (Unicode codepoints) in all documents so far.
</pre>

<code>int64 total_characters = 6;</code>

@param value The totalCharacters to set.
@return This builder for chaining.
java-translate/proto-google-cloud-translate-v3beta1/src/main/java/com/google/cloud/translate/v3beta1/BatchTranslateDocumentMetadata.java