public boolean containsKey(@Nullable Object key) {
    if (unfiltered.containsKey(key)) {
      @SuppressWarnings("unchecked") // k is equal to a K, if not one itself
      K k = (K) key;
      return keyPredicate.apply(k);
    }
    return false;
  }

  @Override
  public Collection<V> removeAll(@Nullable Object key) {
    return containsKey(key) ? unfiltered.removeAll(key) : unmodifiableEmptyCollection();
  }

    /**
     * User property for version filter expression used in session, applied to resolving ranges: a semicolon separated
     * list of filters to apply. By default, no version filter is applied (like in Maven 3).
     * <br/>
     * Supported filters:
     * <ul>
     *     <li>"h" or "h(num)" - highest version or top list of highest ones filter</li>

    Function<String, String> internerFunction =
        Interners.asFunction(Interners.<String>newStrongInterner());

    assertThat(internerFunction.apply(canonical)).isSameInstanceAs(canonical);
    assertThat(internerFunction.apply(not)).isSameInstanceAs(canonical);
  }

  public void testNullPointerExceptions() {
    new NullPointerTester().testAllPublicStaticMethods(Interners.class);
  }

    Function<String, String> internerFunction =
        Interners.asFunction(Interners.<String>newStrongInterner());

    assertThat(internerFunction.apply(canonical)).isSameInstanceAs(canonical);
    assertThat(internerFunction.apply(not)).isSameInstanceAs(canonical);
  }

  public void testNullPointerExceptions() {
    new NullPointerTester().testAllPublicStaticMethods(Interners.class);
  }

    ListenableFuture<? extends V> doFallback(
        AsyncFunction<? super X, ? extends V> fallback, X cause) throws Exception {
      ListenableFuture<? extends V> output = fallback.apply(cause);
      checkNotNull(
          output,
          "AsyncFunction.apply returned null instead of a Future. "
              + "Did you mean to return immediateFuture(null)? %s",
          fallback);
      return output;
    }

    @Override

            String name = (String) e.nextElement();
            String value = props.getProperty(name);
            if (value == null) {
                value = callback.apply(name);
            }
            if (name.startsWith(OVERRIDE_PREFIX)) {
                String overrideName = name.substring(OVERRIDE_PREFIX.length());

        mac.update(type3);
        setMic(mac.digest());
    }

    /**
     * Creates a Type-3 message with the specified parameters.
     *
     * @param flags
     *            The flags to apply to this message.
     * @param lmResponse
     *            The LanManager/LMv2 response.
     * @param ntResponse
     *            The NT/NTLMv2 response.
     * @param domain

                v = cb.apply(s.substring(prefix.length()));
            }
            return v;
        };
    }

    @SafeVarargs
    @Nonnull
    public static UnaryOperator<String> or(UnaryOperator<String>... callbacks) {
        return s -> {
            for (UnaryOperator<String> cb : callbacks) {
                String r = cb.apply(s);
                if (r != null) {

             */
            Plugin plugin = Plugin.newBuilder()
                    .groupId(interpolator.apply(extension.getGroupId()))
                    .artifactId(interpolator.apply(extension.getArtifactId()))
                    .version(interpolator.apply(extension.getVersion()))
                    .build();

            DependencyResult result = pluginDependenciesResolver.resolveCoreExtension(

        for (final UnaryOperator<String> rule : docSettingRewriteRuleList) {
            source = rule.apply(source);
        }
        return source;
    }

    /**
     * Adds a rewrite rule for document settings.
     *
     * @param rule the rewrite rule to apply to document settings
     */
    public void addDocumentSettingRewriteRule(final UnaryOperator<String> rule) {