import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.MissingNode;

public class Example {
    public static void main(String[] args) {
        ObjectMapper mapper = new ObjectMapper();
        JsonNode missing = MissingNode.getInstance();

        // missing is an instance of MissingNode
        System.out.println(missing.isMissingNode()); // prints "true"
    }
}

This example shows how to create an instance of the MissingNode class, which is a special type of JsonNode that represents a missing value. The MissingNode class has a singleton instance, which can be obtained using the MissingNode.getInstance() method. Once obtained, you can check if a JsonNode is a missing node using the isMissingNode() method.