h.acquire();

        // First release: should not close yet
        h.release();
        verify(tree, never()).send(isA(Smb2CloseRequest.class), any());
        verify(tree, never()).send(any(CommonServerMessageBlockRequest.class), any(SmbComBlankResponse.class), any(RequestParam[].class));

        // Second release: should close now via SMB2 path
        h.release();

     */
    @Override
    public void close() {
        release(false);
    }

    public void release() {
        release(true);
    }

    /**
     * @param track
     */
    public void release(final boolean track) {
        final long usage = this.usageCount.decrementAndGet();
        if (log.isTraceEnabled()) {
            log.trace("Release tree " + usage + " " + this);
        }

[kubernetes-client-linux-arm.tar.gz](https://storage.googleapis.com/kubernetes-release/release/v1.2.7/kubernetes-client-linux-arm.tar.gz) | `fd6e39b4a56e03448382825f27f4f30a2e981a8d20f4a8cedbd084bbb4577d42`

    }

    /**
     * Get total number of regions released
     *
     * @return total released regions
     */
    public long getTotalReleased() {
        return totalReleased.get();
    }

    /**
     * Get number of currently active regions
     *
     * @return active regions (allocated - released)
     */
    public long getActiveRegions() {

        <artifactId>a</artifactId>
        <version>LATEST</version>
      </dependency>
      <dependency>
        <groupId>test</groupId>
        <artifactId>b</artifactId>
        <version>RELEASE</version>
        </dependency>
    </dependencies>

        // if some regions were pooled rather than immediately released)
        assertTrue(bufferManager.getTotalReleased() > 0, "Some regions should be released during cleanup");
        assertEquals(allocatedBeforeCleanup, bufferManager.getTotalReleased(),
                "All allocated regions should eventually be released after cleanup");
    }

    @Test
    public void testPooling() throws Exception {

[kubernetes-client-linux-arm64.tar.gz](https://storage.googleapis.com/kubernetes-release/release/v1.5.0-beta.2/kubernetes-client-linux-arm64.tar.gz) | `262c4fa70039389aa5d5b73a0def325471bd24b858157d60c0389fbee5ca671e`

[kubernetes-client-linux-arm64.tar.gz](https://storage.googleapis.com/kubernetes-release/release/v1.3.10/kubernetes-client-linux-arm64.tar.gz) | `176b52d35150ca9f08a7e90e33e2839b7574afe350edf4fafa46745d77bb5aa4`

[kubernetes-client-linux-arm.tar.gz](https://storage.googleapis.com/kubernetes-release/release/v1.4.6/kubernetes-client-linux-arm.tar.gz) | `f8c76fe8c41a5084cc1a1ab3e08d7e2d815f7baedfadac0dc6f9157ed2c607c9`

 *
 * @author Sven Mawson
 * @author Nishant Thakkar
 * @since 1.0
 */
/*
 * Some of the annotations below were added after we released our separate
 * com.google.guava:listenablefuture:1.0 artifact. (For more on that artifact, see
 * https://github.com/google/guava/releases/tag/v27.0) This means that the copy of ListenableFuture
 * in com.google.guava:guava differs from the "frozen" copy in the listenablefuture artifact. This