*            <code>null</code>.
     * @param parent The (read-only) parent model from which to inherit the values, may be <code>null</code>.
     * @param request The model building request that holds further settings, must not be {@code null}.
     * @param problems The container used to collect problems that were encountered, must not be {@code null}.
     */
    void assembleModelInheritance(

    /**
     * Creates a user-friendly artifact id from the specified coordinates.
     *
     * @param groupId The group id, may be {@code null}.
     * @param artifactId The artifact id, may be {@code null}.
     * @param version The version, may be {@code null}.
     * @return The user-friendly artifact id, never {@code null}.
     */
    static String toId(String groupId, String artifactId, String version) {

    /**
     * Builds the effective settings of the specified settings files.
     *
     * @param request the settings building request that holds the parameters, must not be {@code null}
     * @return the result of the settings building, never {@code null}
     * @throws SettingsBuilderException if the effective settings could not be built
     */
    @Nonnull
    SettingsBuilderResult build(@Nonnull SettingsBuilderRequest request);

import javax.crypto.spec.SecretKeySpec;
import javax.security.auth.kerberos.KerberosKey;

/**
 * Utility class for calculating and verifying PAC (Privilege Attribute Certificate) message authentication codes.
 * This class provides methods for computing MACs using various Kerberos encryption types including
 * ARCFOUR-HMAC-MD5 and AES-based HMAC algorithms.
 */
public class PacMac {

    /**

Contributing
============

If you would like to contribute code to OkHttp you can do so through GitHub by
forking the repository and sending a pull request.

When submitting code, please make every effort to follow existing conventions
and style in order to keep the code as readable as possible. Please also make
sure your code compiles by running `./gradlew check`. Checkstyle failures
during compilation indicate errors in your style and can be viewed in the

     * </pre>
     *
     * @param str
     *            the string (can be <code>null</code>)
     * @param defaultStr
     *            the string to return if the argument is <code>null</code> (can be <code>null</code>)
     * @return the given string, or the specified default string if the argument is <code>null</code>
     */
    public static String defaultString(final String str, final String defaultStr) {

     *
     * @param relPath is the path of the requested model source relative to this model source POM.
     * @return related model source or <code>null</code> if no such model source.
     */
    ModelSource2 getRelatedSource(String relPath);

    /**
     * Returns location of the POM, never <code>null</code>.
     */
    URI getLocationURI();

     * <ul>
     * <li>If <code>type</code> is not an array of parameterized types, <code>null</code> is returned.</li>
     * <li>If <code>type</code> is a <code>Class</code>, it is returned as-is.</li>
     * <li>If <code>type</code> is a parameterized type, its raw type is returned.</li>
     * <li>If <code>type</code> is a wildcard type, its (first) upper bound is returned.</li>

        Encoding.PERCENT,
        '['.code,
        ']'.code,
        '{'.code,
        '}'.code,
        '|'.code,
        '^'.code,
        '\''.code,
        ';'.code,
        '='.code,
        '@'.code,
      ).override(
        Encoding.SKIP,
        ':'.code,
        '/'.code,
        '\\'.code,
        '?'.code,
        '#'.code,

    }

    /**
     * Returns the resource as a stream from the context class loader.
     * Returns <code>null</code> if the resource is not found.
     *
     * @param path
     *            The resource path. Must not be {@literal null} or empty string.
     * @return The input stream, or <code>null</code> if not found.
     * @see #getResourceAsStreamNoException(String, String)
     */