public Builder clearText() {
        text_ = getDefaultInstance().getText();
        bitField0_ = (bitField0_ & ~0x00000002);
        onChanged();
        return this;
      }
<pre>
Required. The text to speak.
</pre>

<code>string text = 2 [(.google.api.field_behavior) = REQUIRED];</code>

@return This builder for chaining.
java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/MultiSpeakerMarkup.java