public Builder clearStream() {
      stream_ = getDefaultInstance().getStream();
      bitField0_ = (bitField0_ & ~0x00000001);
      onChanged();
      return this;
    }
<pre>
Required. The name of the stream for to get the thumbnail from.
</pre>

<code>string stream = 1 [(.google.api.field_behavior) = REQUIRED];</code>

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