*
     * @param is the input stream (must not be {@literal null})
     * @return {@link JarEntry}
     * @throws IORuntimeException if an {@link IOException} occurs
     * @see JarInputStream#getNextJarEntry()
     */
    public static JarEntry getNextJarEntry(final JarInputStream is) throws IORuntimeException {
        assertArgumentNotNull("is", is);

        try {

    private void createTestJarWithXml(File jarFile, String xmlContent) throws Exception {
        try (JarOutputStream jos = new JarOutputStream(new FileOutputStream(jarFile))) {
            JarEntry entry = new JarEntry("fess_ds++.xml");
            jos.putNextEntry(entry);
            jos.write(xmlContent.getBytes());
            jos.closeEntry();
        }
    }

    // Test DataStore implementation for testing

                    try (JarFile jarFile = jarURLConnection.getJarFile()) {
                        final Enumeration<JarEntry> entries = jarFile.entries();
                        while (entries.hasMoreElements()) {
                            final JarEntry entry = entries.nextElement();
                            final String entryName = entry.getName();

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

import java.io.File;
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

import org.codelibs.core.jar.JarFileUtil;
import org.codelibs.core.zip.ZipInputStreamUtil;

/**

package org.codelibs.core.io;

import static org.codelibs.core.collection.EnumerationIterator.iterable;
import static org.codelibs.core.misc.AssertionUtil.assertArgumentNotNull;

import java.io.File;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

import org.codelibs.core.lang.ClassUtil;
import org.codelibs.core.zip.ZipInputStreamUtil;

/**

    Entry<String, Collection<Integer>> barEntry = entries.next();
    assertEquals("bar", barEntry.getKey());
    assertThat(barEntry.getValue()).containsExactly(1, 3).inOrder();
    assertThrows(
        UnsupportedOperationException.class, () -> barEntry.setValue(Arrays.<Integer>asList()));
    entries.remove(); // clear