public Builder setMarkNameBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      markName_ = value;
      bitField0_ |= 0x00000001;
      onChanged();
      return this;
    }
<pre>
Timepoint name as received from the client within `&lt;mark&gt;` tag.
</pre>

<code>string mark_name = 4;</code>

@param value The bytes for markName to set.
@return This builder for chaining.
java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/Timepoint.java