I apologize, but the PropertyAccessor is not a class from the Apache Commons IO library. It is a part of the Jackson JSON library, which is a separate library for handling JSON data.

PropertyAccessor class is a part of the Jackson databind package and it provides a way to access properties of a Java object during serialization and deserialization.

Here is an example of how to use the PropertyAccessor with Jackson JSON library:

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.databind.introspect.AnnotatedField;
import com.fasterxml.jackson.databind.introspect.JacksonAnnotationIntrospector;

public class Example {

    public static class Person {
        private String name;
        private int age;
        private boolean isActive;
        // getters and setters
    }

    public static void main(String[] args) throws Exception {
        Person person = new Person();
        person.setName("John Doe");
        person.setAge(30);
        person.setActive(true);

        ObjectMapper mapper = new ObjectMapper();
        mapper.setAnnotationIntrospector(new JacksonAnnotationIntrospector() {
            @Override
            public boolean hasIgnoreMarker(AnnotatedField field) {
                return field.getName().startsWith("is") && super.hasIgnoreMarker(field);
            }
        });
        mapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
        String json = mapper.writeValueAsString(person);
        System.out.println(json);
    }
}

In this example, mapper.setAnnotationIntrospector is used to set a custom JacksonAnnotationIntrospector that overrides the hasIgnoreMarker method to ignore fields that starts with is prefix.

This way the field isActive will not be included in the serialization.

Note: This is using the Jackson JSON library to serialize the POJO to JSON. You need to have the jackson-databind jar in your classpath for this to work.

Please note that PropertyAccessor is not a class from Apache Commons IO library but from Jackson JSON library.