void testAllowChainReturnsFalse() {
        // Given
        when(request.allowChain(nextRequest)).thenReturn(false);

        // When
        boolean result = request.allowChain(nextRequest);

        // Then
        assertFalse(result);
        verify(request, times(1)).allowChain(nextRequest);
    }

    @Test

    }

    @Test
    @DisplayName("Test allowChain returns false")
    void testAllowChain() {
        // Given
        Smb2CancelRequest request = new Smb2CancelRequest(mockConfig, 1L, 0L);
        CommonServerMessageBlockRequest nextRequest = mock(CommonServerMessageBlockRequest.class);

        // When
        boolean allowChain = request.allowChain(nextRequest);

        // Then

        return getAsyncId() != 0;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.CommonServerMessageBlockRequest#allowChain(jcifs.internal.CommonServerMessageBlockRequest)
     */
    @Override
    public boolean allowChain(final CommonServerMessageBlockRequest next) {
        return getConfig().isAllowCompound(getClass().getSimpleName()) && getConfig().isAllowCompound(next.getClass().getSimpleName());

    /**
     * Checks if chaining is allowed with the next request.
     *
     * @param next the next request in the chain
     * @return whether to allow chaining
     */
    boolean allowChain(CommonServerMessageBlockRequest next);

    /**
     * Sets the tree ID.
     *
     * @param t the tree ID to set
     */
    void setTid(int t);

    /**

        return null;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.CommonServerMessageBlockRequest#allowChain(jcifs.internal.CommonServerMessageBlockRequest)
     */
    @Override
    public boolean allowChain(final CommonServerMessageBlockRequest next) {
        return false;
    }

    /**
     * {@inheritDoc}
     *

            assertFalse(testBlock.isAsync());
            assertFalse(testBlock.isResponseAsync());
            assertNull(testBlock.getNext());
            assertFalse(testBlock.allowChain(mock(CommonServerMessageBlockRequest.class)));
            assertNull(testBlock.split());
            assertNull(testBlock.createCancel());
            assertNull(testBlock.getNextResponse());

                            this.name));
                }
                if ((next == null || chain.allowChain(next)) && totalSize + size < maxSize && this.credits.tryAcquire(cost)) {
                    totalSize += size;
                    last = chain;
                    chain = next;