public void enter() {
        LinkedList<ScopeState> stack = values.get();
        if (stack == null) {
            stack = new LinkedList<>();
            values.set(stack);
        }
        stack.addFirst(new ScopeState());
    }

    private ScopeState getScopeState() {
        LinkedList<ScopeState> stack = values.get();
        if (stack == null || stack.isEmpty()) {
            throw new IllegalStateException();

        } else {
            logger.warn("The metadata {} {}{}", metadata, errorType, msg);
        }
    }

    @Override
    public void artifactDescriptorInvalid(RepositoryEvent event) {
        // The exception stack trace is not really interesting here
        // but the message itself may be quite details and span multiple
        // lines with errors in it, so only display it at debug level.

                stack.push(list);
            }

            list.add(parseItem(isCombination, isDigit, version.substring(startIndex)));
        }

        while (!stack.isEmpty()) {
            list = (ListItem) stack.pop();
            list.normalize();
        }
    }

    private static Item parseItem(boolean isDigit, String buf) {
        return parseItem(false, isDigit, buf);
    }

    /**
     * Helper class to traverse graph. Required to make the containing method thread-safe
     * and yet use class level data to lessen stack usage in recursion
     */
    private class ClasspathGraphVisitor {
        MetadataGraph graph;

        ClasspathContainer cpc;

        List<MetadataGraphVertex> visited;

  it is definitely useful to define what the offline state really means.

  [[1]] This is obvious, but the network/internet is unavailable.

  [[2]] Localhost (127.0.0.1) may also be unavailable if the whole
        network stack is offline.

  [[3]] "Remote" repositories referenced using the file:// protocol may
        be available. However, if that file:// url references a
        file-share, as in the case of an NFS or SMB mount, that will

org/codehaus/plexus/util/xml/SerializerXMLWriter.class package org.codehaus.plexus.util.xml; public synchronized class SerializerXMLWriter implements XMLWriter { private final pull.XmlSerializer serializer; private final String namespace; private final java.util.Stack elements; private java.util.List exceptions; public void SerializerXMLWriter(String, pull.XmlSerializer); public void startElement(String); public void addAttribute(String, String); public void writeText(String); public void writeMarkup(String); public...

     *
     * @param content
     * @param error
     */
    void debug(CharSequence content, Throwable error);

    /**
     * Send an exception to the user in the <b>debug</b> error level.<br>
     * The stack trace for this exception will be output when this error level is enabled.
     *
     * @param error
     */
    void debug(Throwable error);

    void debug(Supplier<String> content);

 *
 * This is because the ModelProcessor interface extends ModelLocator and ModelReader. If we
 * made this component available under all its interfaces then it could end up being injected
 * into itself leading to a stack overflow.
 *
 * A side effect of using @Typed is that it translates to explicit bindings in the container.
 * So instead of binding the component under a 'wildcard' key it is now bound with an explicit

int getPercentage(); public String toString(); } org/codehaus/plexus/util/DirectoryWalker.class package org.codehaus.plexus.util; public synchronized class DirectoryWalker { private java.io.File baseDir; private int baseDirOffset; private java.util.Stack dirStack; private java.util.List excludes; private java.util.List includes; private boolean isCaseSensitive; private java.util.List listeners; private boolean debugEnabled; public void DirectoryWalker(); public void addDirectoryWalkList(DirectoryWalkListene);...

org/codehaus/plexus/util/xml/SerializerXMLWriter.class package org.codehaus.plexus.util.xml; public synchronized class SerializerXMLWriter implements XMLWriter { private final pull.XmlSerializer serializer; private final String namespace; private final java.util.Stack elements; private java.util.List exceptions; public void SerializerXMLWriter(String, pull.XmlSerializer); public void startElement(String); public void addAttribute(String, String); public void writeText(String); public void writeMarkup(String); public...