如何为Spring Data Cassandra创建自定义转换？

import org.springframework.context.annotation.Configuration;
import org.springframework.data.cassandra.config.AbstractCassandraConfiguration;
import org.springframework.data.cassandra.core.convert.CassandraCustomConversions;
import org.springframework.data.cassandra.core.mapping.CassandraType;
import org.springframework.data.cassandra.core.mapping.UserDefinedType;
import org.springframework.data.convert.CustomConversions;
import org.springframework.stereotype.Component;

import java.util.Arrays;
import java.util.List;

@Configuration
public class CustomCassandraConfiguration extends AbstractCassandraConfiguration {

    @Override
    protected String getKeyspaceName() {
        return "my_keyspace";
    }

    @Override
    public CustomConversions customConversions() {
        return new CassandraCustomConversions(getCustomConverters(), getCustomTypeContributors());
    }

    private List<?> getCustomConverters() {
        // 注册自定义转换器
        return Arrays.asList(new MyCustomConverter());
    }

    private List<?> getCustomTypeContributors() {
        // 注册自定义类型
        return Arrays.asList(new MyCustomType());
    }

    @Component
    public static class MyCustomConverter implements Converter<MyCustomType, String> {

        @Override
        public String convert(MyCustomType source) {
            // 自定义转换逻辑
            return source.toString();
        }
    }

    @UserDefinedType("my_custom_type")
    public static class MyCustomType {

        @CassandraType(type = DataType.Name.TEXT)
        private String value;

        // getter和setter方法省略
    }
}

spring.data.cassandra.conversion=com.example.CustomCassandraConfiguration