dataStoreParams.putAll(emptyMap);

        assertEquals("existingValue", dataStoreParams.get("existingKey"));
    }

    // Test newInstance
    public void test_newInstance() {
        dataStoreParams.put("key1", "value1");
        dataStoreParams.put("key2", 123);

        DataStoreParams newParams = dataStoreParams.newInstance();

        assertNotNull(newParams);

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotSame;

class ProblemCollectorFactoryTest {

    @Test
    void testNewInstance() {
        ProblemCollector collector1 = ProblemCollectorFactory.newInstance(null);

        Problem problem = new DefaultProblem("MESSAGE1", null, null, -1, -1, null);