public Builder setPhraseSetReferences(int index, java.lang.String value) {
      if (value == null) {
        throw new NullPointerException();
      }
      ensurePhraseSetReferencesIsMutable();
      phraseSetReferences_.set(index, value);
      bitField0_ |= 0x00000002;
      onChanged();
      return this;
    }
<pre>
A collection of phrase set resource names to use.
</pre>

<code>repeated string phrase_set_references = 2 [(.google.api.resource_reference) = { ... }
</code>

@param index The index to set the value at.
@param value The phraseSetReferences to set.
@return This builder for chaining.
java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/SpeechAdaptation.java