public com.google.protobuf.Struct getSystemLabels() {
    return systemLabels_ == null ? com.google.protobuf.Struct.getDefaultInstance() : systemLabels_;
  }
public com . google . protobuf . Struct getSystemLabels ( ) { return systemLabels_ == null ? com . google . protobuf . Struct . getDefaultInstance ( ) : systemLabels_ ; }
<pre>
Output only. Values for predefined system metadata labels.
System labels are a kind of metadata extracted by Google, including
"machine_image", "vpc", "subnet_id",
"security_group", "name", etc.
System label values can be only strings, Boolean values, or a list of
strings. For example:
{ "name": "my-test-instance",
"security_group": ["a", "b", "c"],
"spot_instance": false }
</pre>

<code>.google.protobuf.Struct system_labels = 1;</code>