func (r *RLockedFile) IncLockRef() {
	r.mutex.Lock()
	r.refs++
	r.mutex.Unlock()
}

// Close - this closer implements a special closer
// closes the underlying fd only when the refs
// reach zero.
func (r *RLockedFile) Close() (err error) {
	r.mutex.Lock()
	defer r.mutex.Unlock()

	if r.refs == 0 {
		return os.ErrInvalid
	}

	r.refs--
	if r.refs == 0 {
		err = r.File.Close()
	}

      - master

concurrency:
  # On master/release, we don't want any jobs cancelled so the sha is used to name the group
  group: ${{ (github.ref == 'refs/heads/master' || github.ref == 'refs/heads/release' ) && format('contributor-pr-base-{0}', github.sha) || format('contributor-pr-{0}', github.ref) }}
  cancel-in-progress: false

env:
  # Set the DEVELOCITY_ACCESS_KEY so that a Build Scan is generated

    description: "Testing of Elasticsearch pull requests - {pr-job}"
    workspace: "/dev/shm/elastic+elasticsearch+pull-request+{pr-job}"
    scm:
      - git:
          refspec: "+refs/pull/${ghprbPullId}/*:refs/remotes/origin/pr/${ghprbPullId}/*"
          branches:
            - "${ghprbActualCommit}"
    triggers:
      - github-pull-request:
          org-list:
            - elastic

    description: "Testing of Elasticsearch pull requests - part-2 fips"
    workspace: "/dev/shm/elastic+elasticsearch+pull-request+part-2-fips"
    scm:
      - git:
          refspec: "+refs/pull/${ghprbPullId}/*:refs/remotes/origin/pr/${ghprbPullId}/*"
          branches:
            - "${ghprbActualCommit}"
    triggers:
      - github-pull-request:
          org-list:
            - elastic

            spec.setArgs("--provision", "--provider", "virtualbox");
        });
        isVMStarted = true;
    }

    // stops the VM if refs are down to 0, or force was called
    void maybeStopVM(boolean force) {
        assert refs >= 1;
        this.refs--;
        if ((refs == 0 || force) && isVMStarted) {
            execute(spec -> spec.setCommand("halt"));
            reaper.unregister(extension.getBox());
        }

      - generic-webhook-trigger:
          post-content-params:
            - type: JSONPath
              key: ref
              value: '$.ref'
          regex-filter-text: '$ref'
          regex-filter-expression: "^refs/heads/%BRANCH%$"
          cause: Push to GitHub (refs/heads/%BRANCH%)
          silent-response: true
    scm:
      - git:
          wipe-workspace: false
    builders:
      - multijob:

    project-type: matrix
    node: master
    child-workspace: "/dev/shm/elastic+elasticsearch+pull-request+packaging-upgrade-tests"
    scm:
      - git:
          refspec: "+refs/pull/${ghprbPullId}/*:refs/remotes/origin/pr/${ghprbPullId}/*"
          branches:
            - "${ghprbActualCommit}"
    triggers:
      - github-pull-request:
          org-list:
            - elastic

	<!-- property name="kopf.version" value="15.5.0" / -->
	<!-- property name="kopf.url" value="https://github.com/codelibs/fess-kopf/archive/refs/tags/v${kopf.version}.zip" / -->
	<property name="kopf.version" value="main" />
	<property name="kopf.url" value="https://github.com/codelibs/fess-kopf/archive/refs/heads/${kopf.version}.zip" />

	<!-- Maven Repository -->

    description: "Testing of Elasticsearch pull requests - precommit"
    workspace: "/dev/shm/elastic+elasticsearch+pull-request+precommit"
    scm:
      - git:
          refspec: "+refs/pull/${ghprbPullId}/*:refs/remotes/origin/pr/${ghprbPullId}/*"
          branches:
            - "${ghprbActualCommit}"
    triggers:
      - github-pull-request:
          org-list:
            - elastic

    description: "Testing of Elasticsearch pull requests - bwc"
    workspace: "/dev/shm/elastic+elasticsearch+pull-request+bwc"
    scm:
      - git:
          refspec: "+refs/pull/${ghprbPullId}/*:refs/remotes/origin/pr/${ghprbPullId}/*"
          branches:
            - "${ghprbActualCommit}"
    triggers:
      - github-pull-request:
          org-list:
            - elastic