@java.lang.Override
    protected Builder newBuilderForType(
        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
      Builder builder = new Builder(parent);
      return builder;
    }
<pre>
The
[InputAttachment.key][google.cloud.video.livestream.v1.InputAttachment.key]s
of inputs to failover to when this input is disconnected. Currently, only
up to one backup input is supported.
</pre>

<code>repeated string input_keys = 1;</code>

@param index The index of the value to return.
@return The bytes of the inputKeys at the given index.
java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/InputAttachment.java