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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 2023 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.
 *
 *      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.conf;

import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import java.util.Set;

import org.kie.api.PropertiesConfiguration;
import org.kie.api.conf.ConfigurationKey;
import org.kie.api.conf.MultiValueOption;
import org.kie.api.conf.Option;
import org.kie.api.conf.OptionKey;
import org.kie.api.conf.OptionsConfiguration;
import org.kie.api.conf.SingleValueOption;
import org.kie.internal.utils.ChainedProperties;

public class CompositeConfiguration
        implements OptionsConfiguration, Externalizable {

    private ClassLoader classLoader;

    private ChainedProperties chainedProperties;

    private Map> configurations = new HashMap<>();

    public CompositeConfiguration(ChainedProperties chainedProperties, ClassLoader classloader, ConfigurationFactory... factories) {
        setClassLoader(classloader);

        this.chainedProperties = chainedProperties;

        for (ConfigurationFactory f  : factories) {
            configurations.put(f.type(), f.create(this, classloader, chainedProperties));
        }
    }

    @Override
    public void writeExternal(ObjectOutput out) throws IOException {
        // avoid serializing user defined system properties
        chainedProperties.filterDroolsPropertiesForSerialization();
        out.writeObject(chainedProperties);
    }

    @Override
    public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
        chainedProperties = (ChainedProperties) in.readObject();
    }

    @Override
    public void makeImmutable() {
        configurations.values().stream().forEach(conf -> conf.makeImmutable());
    }

    @Override
    public  void setOption(C option) {
        OptionsConfiguration delegate = configurations.get(option.type());
        if (delegate==null) {
            throw new RuntimeException("Configuration for type " + option.type() + " does not exist");
        }
        delegate.setOption(option);
    }

    @Override
    public  C getOption(OptionKey optionKey) {
        OptionsConfiguration delegate = configurations.get(optionKey.type());
        if (delegate==null) {
            throw new RuntimeException("Configuration for type " + optionKey.type() + " does not exist");
        }
        return delegate.getOption(optionKey);
    }

    @Override
    public  C getOption(OptionKey optionKey, String subKey) {
        OptionsConfiguration delegate = configurations.get(optionKey.type());
        if (delegate==null) {
            throw new RuntimeException("Configuration for type " + optionKey.type() + " does not exist");
        }
        return delegate.getOption(optionKey, subKey);
    }

    @Override
    public  Set getOptionSubKeys(OptionKey optionKey) {
        OptionsConfiguration delegate = configurations.get(optionKey.type());
        if (delegate==null) {
            throw new RuntimeException("Configuration for type " + optionKey.type() + " does not exist");
        }
        return delegate.getOptionSubKeys(optionKey);
    }

    public ClassLoader getClassLoader() {
        return this.classLoader;
    }

    public void setClassLoader(ClassLoader classLoader) {
        this.classLoader = classLoader;
    }

    public ChainedProperties getProperties() {
        return chainedProperties;
    }

    public > X as(ConfigurationKey configuration) {
        return (X) configurations.get(configuration.type());
    }


    @Override
    public boolean setProperty(String name, String value) {
        return setProperty(null, name, value);
    }

    @Override
    public String getProperty(String name) {
        return getProperty(null, name);
    }

    public boolean setProperty(PropertiesConfiguration exclude, String name, String value) {
        for(PropertiesConfiguration c : configurations.values()) {
            if (c != exclude) {
                if (((InternalPropertiesConfiguration)c).setInternalProperty(name, value)) {
                    return true;
                }
            }
        }

       // if the property was not intercepted above, just add it to the chained properties.
        Properties additionalProperty = new Properties();
        additionalProperty.setProperty(name, value);
        chainedProperties.addProperties(additionalProperty);

        return false;
    }

    public String getProperty(PropertiesConfiguration exclude, String name) {
        for (PropertiesConfiguration c : configurations.values()) {
            if (c != exclude) {
                String value = ((InternalPropertiesConfiguration)c).getInternalProperty(name);
                if (value != null) {
                    return value;
                }
            }
        }

        return null;
    }
}