public Optional<Output<String>> handler() {
        return Optional.ofNullable(this.handler);
    }
@return Handler specifies the underlying runtime and configuration that the CRI implementation will use to handle pods of this class. The possible values are specific to the node &amp; CRI configuration.  It is assumed that all handlers are available on every node, and handlers of the same name are equivalent on every node. For example, a handler called &#34;runc&#34; might specify that the runc OCI runtime (using native Linux containers) will be used to run the containers in a pod. The Handler must conform to the DNS Label (RFC 1123) requirements, and is immutable.
sdk/java/src/main/java/com/pulumi/kubernetes/node/v1beta1/RuntimeClassPatchArgs.java