@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (java.lang.Double.doubleToRawLongBits(sizeGb_) != 0) {
      output.writeDouble(1, sizeGb_);
    }
    getUnknownFields().writeTo(output);
  }
<pre>
Output only. Memory size in GB of the node.
</pre>

<code>double size_gb = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>

@return The sizeGb.
java-valkey/proto-google-cloud-valkey-v1beta/src/main/java/com/google/cloud/memorystore/v1beta/NodeConfig.java