public Builder setFeatures(int index, com.google.cloud.videointelligence.v1.Feature value) {
      if (value == null) {
        throw new NullPointerException();
      }
      ensureFeaturesIsMutable();
      features_.set(index, value.getNumber());
      onChanged();
      return this;
    }
<pre>
Required. Requested video annotation features.
</pre>

<code>
repeated .google.cloud.videointelligence.v1.Feature features = 2 [(.google.api.field_behavior) = REQUIRED];
</code>

@param index The index to set the value at.
@param value The features to set.
@return This builder for chaining.
java-video-intelligence/proto-google-cloud-video-intelligence-v1/src/main/java/com/google/cloud/videointelligence/v1/AnnotateVideoRequest.java