val fileContent = FileContentImpl.createByFile(virtualFile, project)
            createKtFileStub(psiManager, builtInDecompiler, fileContent)
        }
    }

    private fun createKtFileStub(
        psiManager: PsiManager,
        builtInDecompiler: KotlinBuiltInDecompiler,
        fileContent: FileContent,
    ): KotlinFileStubImpl? {

    /**
     * Asserts that there is exactly one file present with the given path, and that this file has the given content.
     */
    def assertFileContent(String relativePath, String fileContent) {
        assertFileContent(relativePath, equalTo(fileContent))
    }

    def assertFileContent(String relativePath, Matcher contentMatcher) {
        assertThat(content(relativePath), contentMatcher)
        this
    }

    /**

			serviceCidr: "10.96.0.0/16,fda9:d324:354d:1::/112",
			expStr:      []string{"FileContent--proc-sys-net-ipv4-ip_forward", "FileContent--proc-sys-net-ipv6-conf-default-forwarding"},
		},
		{
			testName:    "single stack ipv4",
			PodSubnet:   "10.244.0.0/16",
			serviceCidr: "10.96.0.0/16",
			expStr:      []string{"FileContent--proc-sys-net-ipv4-ip_forward"},
		},
		{
			testName:    "single stack ipv6",

exec ./mkold$GOEXE 1m testcache/file.txt
go test testcache -run=FileContent
go test testcache -run=FileContent
stdout '\(cached\)'
cp 2y.txt testcache/file.txt
exec ./mkold$GOEXE 50s testcache/file.txt
go test testcache -run=FileContent
! stdout '\(cached\)'
go test testcache -run=FileContent
stdout '\(cached\)'

# Directory contents read via os.ReadDirNames should affect caching.

			}
			return nil
		}
		for _, f := range iamExportFiles {
			iamFile := pathJoin(iamAssetsDir, f)

			fileContent, ok := exportContent[f]
			if !ok {
				t.Fatalf("missing content for %s", f)
			}

			if err := rawDataFn(bytes.NewReader(fileContent), iamFile, len(fileContent)); err != nil {
				t.Fatalf("failed to write %s: %v", iamFile, err)
			}
		}
		zipWriter.Close()

}

// Name returns label for individual FileContentChecks. If not known, will return based on path.
func (fcc FileContentCheck) Name() string {
	if fcc.Label != "" {
		return fcc.Label
	}
	return fmt.Sprintf("FileContent-%s", strings.Replace(fcc.Path, "/", "-", -1))
}

// Check validates if the given file contains the given content.
func (fcc FileContentCheck) Check() (warnings, errorList []error) {

	}
}

func Test_getFirstColumn(t *testing.T) {
	testCases := []struct {
		name        string
		fileContent string
		want        []string
		wantErr     bool
	}{
		{
			name: "valid content",
			fileContent: `libiscsi_tcp 28672 1 iscsi_tcp, Live 0xffffffffc07ae000
libiscsi 57344 3 ib_iser,iscsi_tcp,libiscsi_tcp, Live 0xffffffffc079a000

	var tests = []struct {
		name         string
		fileContents []byte
		gvkmap       kubeadmapi.DocumentMap
		expectedErr  bool
	}{
		{
			name:         "FooOnly",
			fileContents: files["foo"],
			gvkmap: kubeadmapi.DocumentMap{
				{Group: "foo.k8s.io", Version: "v1", Kind: "Foo"}: files["foo"],
			},
		},
		{
			name:         "FooBar",

     * @param file the file whose contents to read.
     * @return an interface that allows lazy access to the contents of the given file.
     *
     * @see FileContents#getAsText()
     * @see FileContents#getAsBytes()
     *
     * @since 6.1
     */
    FileContents fileContents(RegularFile file);

    /**
     * Allows lazy access to the contents of the given file.
     *

			outFilename:     "regular.conf",
			fileContents: `
{
	"cniVersion": "0.3.1",
	"name": "istio-cni",
	"type": "istio-cni"
}`,
		},
		{
			name:            "another regular file",
			dir:             tempDir,
			expectedFailure: false,
			inFilename:      "regular2.conf",
			outFilename:     "regular.conf",
			fileContents: `
{
	"cniVersion": "0.3.1",
	"name": "istio-cni",