import static org.codelibs.core.misc.AssertionUtil.assertArgumentNotNull;

import java.sql.Driver;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Enumeration;

import org.codelibs.core.exception.SQLRuntimeException;
import org.codelibs.core.lang.ClassUtil;

/**
 * Utility class for {@link java.sql.DriverManager}.
 *
 * @author koichik
 */

                return null;
            }

            @Override
            public java.util.Enumeration<String> getHeaders(String name) {
                return null;
            }

            @Override
            public java.util.Enumeration<String> getHeaderNames() {
                return null;
            }

            @Override

import java.io.File;
import java.io.IOException;
import java.lang.reflect.Field;
import java.net.JarURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Enumeration;
import java.util.List;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import java.util.logging.Logger;
import junit.framework.Test;
import junit.framework.TestCase;

        public String getHeader(String name) {
            return null;
        }

        @Override
        public java.util.Enumeration<String> getHeaders(String name) {
            return java.util.Collections.emptyEnumeration();
        }

        @Override
        public java.util.Enumeration<String> getHeaderNames() {
            return java.util.Collections.emptyEnumeration();
        }

        @Override

    Enumeration<Integer> enumer = Iterators.asEnumeration(iter);

    assertFalse(enumer.hasMoreElements());
    assertThrows(NoSuchElementException.class, () -> enumer.nextElement());
  }

  public void testAsEnumerationSingleton() {
    Iterator<Integer> iter = ImmutableList.of(1).iterator();
    Enumeration<Integer> enumer = Iterators.asEnumeration(iter);

    private static final String API_FORMAT_TYPE = "apiFormatType";

    /** Path prefix for API endpoints. */
    protected String pathPrefix;

    /**
     * Enumeration of supported API format types.
     */
    protected enum FormatType {
        /** Search API format. */
        SEARCH,
        /** Label API format. */
        LABEL,
        /** Popular word API format. */

import java.io.OutputStream;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.io.Reader;
import java.io.Writer;
import java.nio.file.Path;
import java.util.Collection;
import java.util.Enumeration;
import java.util.InvalidPropertiesFormatException;
import java.util.Map;
import java.util.Properties;
import java.util.Set;

import org.codelibs.core.exception.FileAccessException;

            throw new UnsupportedOperationException();
        }

        @Override
        public java.util.Enumeration<String> getHeaders(String name) {
            throw new UnsupportedOperationException();
        }

        @Override
        public java.util.Enumeration<String> getHeaderNames() {
            throw new UnsupportedOperationException();
        }

        @Override

    Enumeration<Integer> enumer = Iterators.asEnumeration(iter);

    assertFalse(enumer.hasMoreElements());
    assertThrows(NoSuchElementException.class, () -> enumer.nextElement());
  }

  public void testAsEnumerationSingleton() {
    Iterator<Integer> iter = ImmutableList.of(1).iterator();
    Enumeration<Integer> enumer = Iterators.asEnumeration(iter);