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A json schema validator that supports draft v4, v6, v7, v2019-09 and v2020-12

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/*
 * Copyright (c) 2024 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.networknt.schema.serialization;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.yaml.YAMLMapper;

/**
 * YAML Mapper Factory.
 */
public class YamlMapperFactory {

    /**
     * The holder defers the classloading until it is used.
     */
    private static class Holder {
        private static final ObjectMapper INSTANCE = YAMLMapper.builder().build();
    }

    /**
     * Gets the singleton instance of the YAMLMapper.
     * 
     * @return the YAMLMapper
     */
    public static ObjectMapper getInstance() {
        return Holder.INSTANCE;
    }
}