this.groupId = (groupId != null && !groupId.isEmpty()) ? groupId : null;
        this.artifactId = (artifactId != null && !artifactId.isEmpty()) ? artifactId : null;
        this.classifier = (classifier != null && !classifier.isEmpty()) ? classifier : null;
        this.extension = (extension != null && !extension.isEmpty()) ? extension : null;
        this.version = (version != null && !version.isEmpty()) ? version : null;

    private String join(String message1, String message2) {
        String message = "";

        if (message1 != null && !message1.isEmpty()) {
            message = message1.trim();
        }

        if (message2 != null && !message2.isEmpty()) {
            if (message != null && !message.isEmpty()) {
                if (message.endsWith(".") || message.endsWith("!") || message.endsWith(":")) {
                    message += " ";

    assertTrue(map.isEmpty());
    assertEquals(0, map.size());
    assertFalse(map.containsKey("1"));
    assertFalse(map.containsKey("2"));
    assertFalse(map.containsKey("3"));
    assertEquals(0L, map.get("1"));
    assertEquals(0L, map.get("2"));
    assertEquals(0L, map.get("3"));

    map.putAll(in);
    assertFalse(map.isEmpty());
    assertEquals(3, map.size());

        boolean w = false;
        w = addToStringField(sb, prefix, o -> !o.isEmpty(), "prefix", w);
        w = addToStringField(sb, namespaceUri, o -> !o.isEmpty(), "namespaceUri", w);
        w = addToStringField(sb, name, o -> !o.isEmpty(), "name", w);
        w = addToStringField(sb, value, o -> !o.isEmpty(), "value", w);
        w = addToStringField(sb, attributes, o -> !o.isEmpty(), "attributes", w);

     * Test method for
     * {@link org.codelibs.core.collection.CollectionsUtil#isEmpty(java.util.Collection)}
     * .
     */
    @Test
    public void testIsEmptyCollectionOfQ() {
        Collection<String> c = null;
        assertThat(CollectionsUtil.isEmpty(c), is(true));
        c = new ArrayList<String>();
        assertThat(CollectionsUtil.isEmpty(c), is(true));
    }

    /**
     * Test method for

    }
    assertEquals(expectedSize, size2);
  }

  @CollectionSize.Require(ZERO)
  public void testIsEmptyYes() {
    assertTrue(multimap().isEmpty());
  }

  @CollectionSize.Require(absent = ZERO)
  public void testIsEmptyNo() {
    assertFalse(multimap().isEmpty());
  }

  @CollectionSize.Require(absent = ZERO)
  @MapFeature.Require(ALLOWS_NULL_KEYS)
  public void testSizeNullKey() {

            }
        }

        if (!caseInsensitiveMatches.isEmpty()) {
            matches.addAll(caseInsensitiveMatches);
        } else if (!caseSensitiveCamelCaseMatches.isEmpty()) {
            matches.addAll(caseSensitiveCamelCaseMatches);
        } else if (kebabCaseMatches.isEmpty() && kebabCasePrefixMatches.isEmpty()) {
            matches.addAll(caseInsensitiveCamelCaseMatches);
        }

        assertTrue(docMap.isEmpty());
        value.clear();

        List<String> keys = Arrays.asList("test_2", "test_0", "lang", "test_1");
        value.put(keys.get(0), true);
        value.put(keys.get(1), 1000);
        value.put(keys.get(2), "ja");
        value.put(keys.get(3), "str");
        docMap = new DocMap(value);
        assertFalse(docMap.isEmpty());

        if (getSource() != null && !getSource().isEmpty()) {
            buffer.append(getSource());
        }
        if (getLineNumber() > 0) {
            if (!buffer.isEmpty()) {
                buffer.append(", ");
            }
            buffer.append("line ").append(getLineNumber());
        }
        if (getColumnNumber() > 0) {
            if (!buffer.isEmpty()) {
                buffer.append(", ");
            }

                }
            }
        }

        List<Dependency> result = new ArrayList<>();
        if (!compileTimeScope.isEmpty() || !runtimeScope.isEmpty() || !testScope.isEmpty() || !providedScope.isEmpty() || !systemScope.isEmpty()) {
            if (!compileTimeScope.isEmpty()) {
                for (org.apache.maven.model.Dependency dep : compileTimeScope) {
                    createGradleDep("api", result, dep, war);