totalAllocated.incrementAndGet();
        return region;
    }

    /**
     * Release a send region back to the pool
     *
     * @param region memory region to release
     */
    public void releaseSendRegion(RdmaMemoryRegion region) {
        if (region.getSize() == sendBufferSize && availableSendRegions.size() < initialSendBuffers * 2) {

    @Test
    @DisplayName("release(): verifies it is invoked exactly once")
    void release_invokedOnce() throws Exception {
        // Arrange: no setup needed; we verify interaction only

        // Act: call release
        handle.release();

        // Assert: verify one invocation and no more
        verify(handle, times(1)).release();
        verifyNoMoreInteractions(handle);
    }

        @Test
        @DisplayName("release should decrement usage count")
        void shouldDecrementUsageCount() {
            transport.acquire();
            long beforeRelease = transport.getUsageCount();
            transport.release();
            assertEquals(beforeRelease - 1, transport.getUsageCount());
        }

        @Test
        @DisplayName("release should throw exception when usage count would go negative")

	<property name="maven.release.repo.url" value="https://maven.codelibs.org" />
	<property name="opensearch.version" value="3.2.0" />

	<target name="install.modules">
		<mkdir dir="${target.dir}" />
		<delete dir="${modules.dir}" />
		<mkdir dir="${modules.dir}" />

		<!-- analysis-common -->
		<antcall target="install.module">
			<param name="repo.url" value="${maven.release.repo.url}" />

        <executions>
          <execution>
            <id>default-compile</id>
            <goals>
              <goal>compile</goal>
            </goals>
            <configuration>
              <release>8</release>
              <excludes>
                <exclude>module-info.java</exclude>
              </excludes>
              <compilerArgs>
                <!--
                    Make includes/excludes fully work:

	<property name="maven.release.repo.url" value="https://oss.sonatype.org/content/repositories/releases" />

	<target name="install.plugins">
		<mkdir dir="${target.dir}" />
		<delete dir="${plugins.dir}" />
		<mkdir dir="${plugins.dir}" />
		<!-- analysis-extension -->
		<antcall target="install.plugin">
			<param name="repo.url" value="${maven.release.repo.url}" />

        verify(tree, times(1)).acquire();

        // Act: first release does not release yet (usage -> 1)
        c.release();
        verify(tree, never()).release();

        // Act: second release (usage -> 0) releases the tree
        c.release();
        verify(tree, times(1)).release();
    }

    @Test
    @DisplayName("release below zero throws RuntimeCIFSException")
    void release_belowZero_throws() {

* In code blocks within the Markdown document, translate comments (`# a comment`), but leave the rest unchanged.

* Do not change anything enclosed in "``" (inline code).

* In lines starting with `///` translate only the text part after `|`. Leave the rest unchanged.

    @Test
    @DisplayName("close calls release and decrements usage; double release throws")
    void closeAndReleaseBehavior() {
        // Validates usage counting and that an extra release() throws RuntimeCIFSException
        // First close -> usage 1 -> 0, triggers treeConnection.release()
        handle.close();
        verify(treeConnection, times(1)).release();

        // Second release -> usage 0 -> -1 triggers RuntimeCIFSException

	CopyrightYear = "0000"

	// MinioReleaseTagTimeLayout - release tag time layout.
	MinioReleaseTagTimeLayout = "2006-01-02T15-04-05Z"

	// MinioOSARCH - OS and ARCH.
	minioOSARCH = runtime.GOOS + "-" + runtime.GOARCH

	// MinioReleaseBaseURL - release url without os and arch.
	MinioReleaseBaseURL = "https://dl.min.io/server/minio/release/"

	// MinioReleaseURL - release URL.