public Builder setLanguageCodes(int index, java.lang.String value) {
        if (value == null) {
          throw new NullPointerException();
        }
        ensureLanguageCodesIsMutable();
        languageCodes_.set(index, value);
        bitField0_ |= 0x00000001;
        onChanged();
        return this;
      }
<pre>
The BCP-47 language code(s) for terms defined in the glossary.
All entries are unique. The list contains at least two entries.
Expected to be an exact match for GlossaryTerm.language_code.
</pre>

<code>repeated string language_codes = 1;</code>

@param index The index to set the value at.
@param value The languageCodes to set.
@return This builder for chaining.
java-translate/proto-google-cloud-translate-v3beta1/src/main/java/com/google/cloud/translate/v3beta1/Glossary.java