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The Drools and jBPM internal API which is NOT backwards compatible between releases.

There is a newer version: 9.44.0.Final

/*
 * Copyright 2020 Red Hat, Inc. and/or its affiliates.
 *
 * 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 org.kie.internal.pmml;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Class used to provide utility methods to manage implementation to be invoked
 * at runtime
 */
public class PMMLImplementationsUtil {

    private static final Logger LOGGER = LoggerFactory.getLogger(PMMLImplementationsUtil.class);

    private static final String JPMML_IMPL = "org.kie.dmn.jpmml.DMNjPMMLInvocationEvaluator";

    private PMMLImplementationsUtil() {
    }

    /**
     * @param classLoader
     * @return true if org.kie.dmn.jpmml.DMNjPMMLInvocationEvaluator is found in the given
     * ClassLoader,
     * false otherwise
     */
    public static boolean isjPMMLAvailableToClassLoader(final ClassLoader classLoader) {
        try {
            classLoader.loadClass(JPMML_IMPL);
            LOGGER.info("jpmml libraries available on classpath");
            return true;
        } catch (ClassNotFoundException e) {
            return false;
        }
    }
}