public Builder setGstreamerBufferDescriptor(
          com.google.cloud.visionai.v1.GstreamerBufferDescriptor value) {
        if (gstreamerBufferDescriptorBuilder_ == null) {
          if (value == null) {
            throw new NullPointerException();
          }
          typeDetails_ = value;
          onChanged();
        } else {
          gstreamerBufferDescriptorBuilder_.setMessage(value);
        }
        typeDetailsCase_ = 2;
        return this;
      }
<pre>
GstreamerBufferDescriptor is the descriptor for gstreamer buffer type.
</pre>

<code>.google.cloud.visionai.v1.GstreamerBufferDescriptor gstreamer_buffer_descriptor = 2;
</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/PacketType.java