import java.util.function.BiFunction;
import java.util.function.Function;

import org.apache.commons.lang3.StringUtils;

import com.google.common.base.CaseFormat;

/**
 * Parameter map that converts between camelCase and snake_case.
 *
 * @param <K> the key type
 * @param <V> the value type
 */
public class ParamMap<K, V> implements Map<K, V> {

    private final Map<K, V> parent;

    /**

 * data store specific parameters with type-safe access methods.
 *
 * <p>The class uses a ParamMap internally which provides case format conversion
 * between camelCase and snake_case parameter names for flexible parameter access.
 * Parameters can be stored as any Object type and retrieved with type conversion
 * support for common types like String.</p>
 *

        TestDataStoreParams testParams = new TestDataStoreParams(paramMap);

        assertEquals("value1", testParams.get("key1"));
    }

    // Test case conversion through ParamMap (camelCase to snake_case)
    public void test_caseConversion() {
        dataStoreParams.put("camelCaseKey", "value1");
        // ParamMap should handle case conversion
        assertNotNull(dataStoreParams.get("camelCaseKey"));

|   alternation
()  grouping
[]  option (0 or 1 times)
{}  repetition (0 to n times)
</pre>

<p>
Lowercase production names are used to identify lexical (terminal) tokens.
Non-terminals are in CamelCase. Lexical tokens are enclosed in
double quotes <code>""</code> or back quotes <code>``</code>.
</p>

<p>
The form <code>a … b</code> represents the set of characters from