Preconditions.checkNotNull(task, "task must not be null!");
    Preconditions.checkNotNull(result, "result must not be null!");
    return delegate.submit(task, result);
  }

  @Override
  public ListenableFuture<?> submit(Runnable task) {
    Preconditions.checkNotNull(task, "task must not be null!");
    return delegate.submit(task);
  }

  @Override
  public <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks)

        when(mockCalledName.getNameType()).thenReturn(0x20);
        when(mockCalledName.getScope()).thenReturn(null);

        when(mockCallingName.getName()).thenReturn("CLIENT");
        when(mockCallingName.getNameType()).thenReturn(0x00);
        when(mockCallingName.getScope()).thenReturn(null);

        SessionRequestPacket packet = new SessionRequestPacket(mockConfig, mockCalledName, mockCallingName);

     */
    public static String toString(final Object obj) {
        return obj == null ? null : obj.toString();
    }

    /**
     * Returns the object, or the defaultValue if the object is <code>null</code>.
     * <p>
     * Usage example:
     * </p>
     *
     * <pre>
     * ObjectUtil.defaultValue(null, "NULL")  = "NULL"
     * ObjectUtil.defaultValue(null, 1)    = 1

        if (this.origin_server != null) {
            resolveWeak();
        }
        if (this.type == SID_TYPE_UNKNOWN) {
            final String full = toString();
            return full.substring(0, full.length() - getAccountName().length() - 1);
        }
        return this.domainName;
    }

    @Override
    public String getAccountName() {
        if (this.origin_server != null) {
            resolveWeak();

        }
    }

    @Nested
    @DisplayName("Invalid and null inputs")
    class InvalidInputs {
        @Test
        @DisplayName("getSigningKey throws when unavailable")
        void testGetSigningKeyThrows() {
            DummySSPContext ctx = new DummySSPContext(null, false, null, null, 0, false);
            CIFSException ex = assertThrows(CIFSException.class, ctx::getSigningKey);

                                    propertyName, valueClass == null ? null : valueClass.getName(),
                                    valueClass == null ? null : valueClass.getClassLoader(), convertedValue,
                                    targetClass == null ? null : targetClass.getName(),
                                    targetClass == null ? null : targetClass.getClassLoader() }).initCause(t);
                }

        CIFSException last = null;
        final RequestWithPath rpath = request instanceof RequestWithPath r ? r : null;
        final String savedPath = rpath != null ? rpath.getPath() : null;
        final String savedFullPath = rpath != null ? rpath.getFullUNCPath() : null;

        final String fullPath = "\\" + loc.getServer() + "\\" + loc.getShare() + loc.getUNCPath();

     * StringUtil.defaultString("aaa", "NULL") = "aaa"
     * StringUtil.defaultString("aaa", null)   = "aaa"
     * StringUtil.defaultString(null, null)    = null
     * </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>)

    }
    // ------------------------------------------------------------------------
    public MetadataGraphVertex addVertex(ArtifactMetadata md) {
        if (md == null) {
            return null;
        }

        checkVertices();

        MetadataGraphVertex v = findVertex(md);
        if (v != null) {
            return v;
        }

        v = new MetadataGraphVertex(md);

        if (entry == null)
            return false;

        LeaseManager.LeaseEntry leaseEntry = baseLeaseManager.getLease(entry.getLeaseKey());
        return leaseEntry != null && leaseEntry.hasReadCache();
    }

    /**
     * Get cached directory listing
     *
     * @param directoryPath directory path
     * @return list of cached files or null
     */