*
   * <p>The resulting set's iterator does not support {@code remove()}, but all other set methods
   * are supported. When given an element that doesn't satisfy the predicate, the set's {@code
   * add()} and {@code addAll()} methods throw an {@link IllegalArgumentException}. When methods
   * such as {@code removeAll()} and {@code clear()} are called on the filtered set, only elements

And it will also have both responses in the documentation, one for `404` and one for `403`.

///

## The main `FastAPI` { #the-main-fastapi }

Now, let's see the module at `app/main.py`.

Here's where you import and use the class `FastAPI`.

This will be the main file in your application that ties everything together.

And as most of your logic will now live in its own specific module, the main file will be quite simple.

            rpc.retval = 0;
            return null;
        }).when(mockDcerpcHandle).sendrecv(any(MsrpcLsarOpenPolicy2.class));

        LsaPolicyHandle handle = new LsaPolicyHandle(mockDcerpcHandle, "server", 123);

        // Now, mock the behavior for MsrpcLsarClose to throw IOException
        doThrow(new IOException("Close network error")).when(mockDcerpcHandle).sendrecv(any(MsrpcLsarClose.class));

        // Act & Assert

        when(configWithCreds.getDefaultUsername()).thenReturn("testuser");
        when(configWithCreds.getDefaultPassword()).thenReturn("testpass");
        when(configWithCreds.getDefaultDomain()).thenReturn("TESTDOMAIN");
        when(configWithCreds.getBufferCacheSize()).thenReturn(16);
        when(configWithCreds.getMaximumBufferSize()).thenReturn(65536);

        // When

        when(file.ensureTreeConnected()).thenReturn(tree);
        when(tree.getConfig()).thenReturn(cfg);
        when(tree.getReceiveBufferSize()).thenReturn(1024);
        when(tree.getSendBufferSize()).thenReturn(1024);
        when(tree.hasCapability(anyInt())).thenAnswer(inv -> ntSmbsCap && inv.getArgument(0).equals(SmbConstants.CAP_NT_SMBS));
        when(tree.areSignaturesActive()).thenReturn(false);

        testFileId = new byte[16];
        Arrays.fill(testFileId, (byte) 0xAB);

        // Use lenient stubbing for default configuration values
        lenient().when(mockConfig.getNotifyBufferSize()).thenReturn(8192);
        lenient().when(mockContext.getConfig()).thenReturn(mockConfig);

        request = new Smb2ChangeNotifyRequest(mockConfig, testFileId);
    }

    @Test

        SmbTransportImpl transport = mock(SmbTransportImpl.class);

        when(tree.isConnected()).thenReturn(true);
        when(tree.getSession()).thenReturn(session);
        when(tree.acquire(false)).thenReturn(tree);
        when(session.getTransport()).thenReturn(transport);
        when(transport.isDisconnected()).thenReturn(false);
        when(transport.getRemoteHostName()).thenReturn("host");
        setTree(c, tree);

			// branch
			xlMeta.data.remove(versionID, dataDir)

			// We need to attempt delete "dataDir" on the disk
			// due to a CopyObject() bug where it might have
			// inlined the data incorrectly, to avoid a situation
			// where we potentially leave "DataDir"
			filePath := pathJoin(volumeDir, path, dataDir)
			if err = checkPathLength(filePath); err != nil {
				return err
			}

            return null;
        }).when(mockDcerpcHandle).sendrecv(any(MsrpcSamrOpenDomain.class));

        SamrDomainHandle handle = new SamrDomainHandle(mockDcerpcHandle, mockPolicyHandle, access, mockSid);

        IOException expectedException = new IOException("Network error during close");
        // Simulate IOException during close RPC call

        verify(tree).send(request, RequestParam.NO_TIMEOUT, RequestParam.NO_RETRY);
    }

    @Test
    @DisplayName("send throws CIFSException for null request when implementation does")
    void send_nullRequest_throws() throws Exception {
        // Arrange
        when(tree.send(isNull())).thenThrow(new CIFSException("null request"));

        // Act
        CIFSException ex = assertThrows(CIFSException.class, () -> tree.send(null));