*/
    public SID(final String textual) throws SmbException {
        final StringTokenizer st = new StringTokenizer(textual, "-");
        if (st.countTokens() < 3 || !st.nextToken().equals("S")) {
            // need S-N-M
            throw new SmbException("Bad textual SID format: " + textual);
        }

        this.revision = Byte.parseByte(st.nextToken());

     */
    public boolean isUser() {
        return ROLE_USER.equals(role);
    }

    /**
     * Checks if this is an assistant message.
     *
     * @return true if this is an assistant message
     */
    public boolean isAssistant() {
        return ROLE_ASSISTANT.equals(role);
    }

    /**
     * Gets the HTML-rendered content.
     *

        MetadataGraphVertex v = new MetadataGraphVertex(md);
        v.setCompareVersion(versionedVertices);
        v.setCompareScope(scopedVertices);

        for (MetadataGraphVertex gv : vertices) {
            if (gv.equals(v)) {
                return gv;
            }
        }

        return null;
    }
    // ------------------------------------------------------------------------

 * equivalence of instances.
 *
 * <p><b>Warning:</b> The comparison must be <i>consistent with equals</i> as explained by the
 * {@link Comparable} class specification. Otherwise, the resulting multiset will violate the {@link
 * java.util.Collection} contract, which is specified in terms of {@link Object#equals}.
 *
 * <p>See the Guava User Guide article on <a href=

        boolean found = false;
        for (Iterator<Plugin> i = plugins.iterator(); i.hasNext() && !found; ) {
            Plugin plugin = i.next();
            if (plugin.getPrefix().equals(goalPrefix)) {
                found = true;
            }
        }
        if (!found) {
            Plugin plugin = new Plugin();
            plugin.setPrefix(goalPrefix);

                                .getGenericReturnType();
                        if (returnType instanceof ParameterizedType parameterizedType) {
                            return !parameterizedType.getActualTypeArguments()[0].equals(String.class);
                        } else {
                            return false;
                        }
                    } catch (ReflectiveOperationException | SecurityException e) {

  public <T extends @Nullable Object> T[] toArray(T[] other) {
    return delegate.toArray(other);
  }

  @Override
  public String toString() {
    return delegate.toString();
  }

  // TODO(cpovirk): equals(), as well, in case it's any faster than Sets.equalsImpl?

  @Override
  public int hashCode() {
    return delegate.hashCode();
  }

  public void testKeySetIteratorRemove() {
    int key0Count = multimap().get(k0()).size();
    Iterator<K> keyItr = multimap().keySet().iterator();
    while (keyItr.hasNext()) {
      if (keyItr.next().equals(k0())) {
        keyItr.remove();
      }
    }
    assertEquals(getNumElements() - key0Count, multimap().size());
    assertGet(k0());
  }

    }
    for (int i = 0; i < expectedList.size(); i++) {
      E expected = expectedList.get(i);
      E actual = getList().get(i);
      if (expected != actual && (expected == null || !expected.equals(actual))) {
        fail("mismatch at index " + i + ": " + reportContext(expectedList));
      }
    }
  }

  /**
   * Used to delay string formatting until actually required, as it otherwise shows up in the test

   * identically. However, as code migrates to {@code java.util.function}, that behavior will
   * disappear. It is best not to depend on it.
   */
  @Override
  boolean equals(@Nullable Object object);