@CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testClear() {
    collection.clear();
    assertTrue("After clear(), a collection should be empty.", collection.isEmpty());
    assertEquals(0, collection.size());
    assertFalse(collection.iterator().hasNext());
  }

  @CollectionFeature.Require(absent = SUPPORTS_REMOVE)
  @CollectionSize.Require(absent = ZERO)

        return getGroupId()
                + ':'
                + getArtifactId()
                + ':'
                + getExtension()
                + ':'
                + c
                + (c.isEmpty() ? "" : ":")
                + getVersionConstraint();
    }

    // -------------------------------------------------------------------------------------------
    public MetadataTreeNode getClasspathAsTree() throws MetadataResolutionException {
        if (classpath == null || classpath.isEmpty()) {
            return null;
        }

        MetadataTreeNode tree = null;
        MetadataTreeNode parent = null;

        for (ArtifactMetadata md : classpath) {

        System.out.println("Project " + project1.getId() + " " + project1);
        Set set = project1.getArtifacts();
        assertNotNull(set, "No artifacts");
        assertFalse(set.isEmpty(), "No Artifacts");
        Iterator iter = set.iterator();
        assertTrue(set.size() == 4, "Set size should be 4, is " + set.size());

        while (iter.hasNext()) {

            }
            String methodName = cells.get(0).getTextContent().trim();
            Collection<MethodMetaData> methods = classDoc.getClassMetaData().findDeclaredMethods(methodName);
            if (methods.isEmpty()) {
                throw new RuntimeException(String.format("No metadata for method '%s.%s()'. Available methods: %s", classDoc.getName(), methodName, classDoc.getClassMetaData().getDeclaredMethodNames()));
            }

            this.bufferSize = bufferSize;
            this.cache = new ArrayList<>(maxBuffers);
        }

        @Override
        public synchronized byte[] getBuffer() {
            if (!cache.isEmpty()) {
                return cache.remove(0);
            }
            return new byte[bufferSize];
        }

        @Override
        public synchronized void releaseBuffer(byte[] buf) {

        boolean skipNextEmpty = false;

        final List<String> output = new ArrayList<>(lines.size());

        for (final String line : lines) {
            if (line.isEmpty()) {
                if (skipNextEmpty) {
                    continue;
                } else {
                    skipNextEmpty = true;
                }
            } else {
                skipNextEmpty = false;

        if (roleTypeList != null && !roleTypeList.isEmpty()) {
            buf.append(";r=");
            buf.append(roleTypeList.stream().sorted().collect(Collectors.joining(",")));
        }

        @SuppressWarnings("unchecked")
        final List<String> virtualHostList = (List<String>) dataMap.get(fessConfig.getIndexFieldVirtualHost());
        if (virtualHostList != null && !virtualHostList.isEmpty()) {
            buf.append(";v=");

        } catch (Exception e) {
            // Ignore
        }
    }

    private static String formatMessage(ErrorCode errorCode, String message) {
        if (message == null || message.isEmpty()) {
            return String.format("[%s] %s", errorCode.name(), errorCode.getDescription());
        }
        return String.format("[%s] %s: %s", errorCode.name(), errorCode.getDescription(), message);
    }

            try {
                return Files.readAllLines(exclusionsFile.toPath())
                    .stream()
                    .map(String::trim)
                    .filter(line -> (line.isEmpty() || line.startsWith("#")) == false)
                    .collect(Collectors.toList());
            } catch (IOException e) {
                throw new GradleException("Failed to read " + exclusionsFile.getAbsolutePath(), e);