public Builder setLanguageCodes(int index, java.lang.String value) {
      if (value == null) {
        throw new NullPointerException();
      }
      ensureLanguageCodesIsMutable();
      languageCodes_.set(index, value);
      bitField0_ |= 0x00000004;
      onChanged();
      return this;
    }
<pre>
The list of languages of the query. This is
the BCP-47 language code, such as "en-US" or "sr-Latn".
For more information, see
[Tags for Identifying Languages](https://tools.ietf.org/html/bcp47).

The maximum number of allowed characters is 255.
</pre>

<code>repeated string language_codes = 3;</code>

@param index The index to set the value at.
@param value The languageCodes to set.
@return This builder for chaining.
java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/CompleteQueryRequest.java