public Builder addAllLanguageCodes(java.lang.Iterable<java.lang.String> values) {
        ensureLanguageCodesIsMutable();
        com.google.protobuf.AbstractMessageLite.Builder.addAll(values, languageCodes_);
        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 values The languageCodes to add.
@return This builder for chaining.
java-translate/proto-google-cloud-translate-v3beta1/src/main/java/com/google/cloud/translate/v3beta1/Glossary.java