public void assertFileExistence(File dir, String filename, boolean shouldExist) {
        File file = new File(dir, filename);

        if (shouldExist) {
            assertTrue(file.exists());
        } else {
            assertFalse(file.exists());
        }
    }

    public void assertFileContents(File dir, String filename, String contentsTest, String encoding) throws IOException {

			meshConfigMapName, ctx.IstioNamespace(), err)
	}
	// values in the data are strings, while proto might use a
	// different data type.  therefore, we have to get a value by a
	// key
	configYaml, exists := meshConfigMap.Data[configMapKey]
	if !exists {
		return nil, fmt.Errorf("missing configuration map key %q", configMapKey)
	}

                boolean exists = installed.stream().map(this::getArtifactFromMap)
                        .anyMatch(a -> a.getName().equals(target.getName()) && a.getVersion().equals(target.getVersion()));
                if (!exists) {
                    ThreadUtil.sleep(500);
                    continue;
                }
                assertTrue(exists);
                done = true;
                break;

		// Validate volume does not exist.
		{
			volume: "i-dont-exist",
			path:   "",
			err:    errVolumeNotFound,
		},
		// TestXLStorage case - 2.
		// Validate bad condition file does not exist.
		{
			volume: "exists",
			path:   "as-file-not-found",
			err:    errFileNotFound,
		},
		// TestXLStorage case - 3.
		// Validate bad condition file exists as prefix/directory and

        }

        if (outputFile.exists()) {
            if (logger.isDebugEnabled()) {
                logger.debug("The thumbnail file exists: {}", outputFile.getAbsolutePath());
            }
            return true;
        }

        final File parentFile = outputFile.getParentFile();
        if (!parentFile.exists()) {
            parentFile.mkdirs();
        }

        assertFalse(cos.done);
        assertFalse(cos.isInMemory());
        File file = cos.getFile();
        assertTrue(cos.done);
        assertTrue(file.exists());
        cos.close();
        assertTrue(cos.done);
        assertTrue(file.exists());
    }

    @Test
    public void inFileWithoutGet() throws IOException {
        ContentOutputStream cos = new ContentOutputStream(10, Curl.tmpDir);

        if (opLambda != null) {
            opLambda.callback(builder);
        }
    }

    public void setAvailable_Exists() {
        setAvailable_Exists(null);
    }

    public void setAvailable_Exists(ConditionOptionCall<ExistsQueryBuilder> opLambda) {
        ExistsQueryBuilder builder = regExistsQ("available");
        if (opLambda != null) {

	for !file.Exists(cniConfigFilepath) {
		if strings.HasSuffix(cniConfigFilepath, ".conf") && file.Exists(cniConfigFilepath+"list") {
			installLog.Infof("%s doesn't exist, but %[1]slist does; Using it as the CNI config file instead.", cniConfigFilepath)
			cniConfigFilepath += "list"
		} else if strings.HasSuffix(cniConfigFilepath, ".conflist") && file.Exists(cniConfigFilepath[:len(cniConfigFilepath)-4]) {

        if (opLambda != null) {
            opLambda.callback(builder);
        }
    }

    public void setAvailable_Exists() {
        setAvailable_Exists(null);
    }

    public void setAvailable_Exists(ConditionOptionCall<ExistsQueryBuilder> opLambda) {
        ExistsQueryBuilder builder = regExistsQ("available");
        if (opLambda != null) {

  }

  private interface HierarchyFixtureInterface {
    // Exists only for hierarchy mapping; no members.
  }

  private interface HierarchyFixtureSubinterface extends HierarchyFixtureInterface {
    // Exists only for hierarchy mapping; no members.
  }

  private static class HierarchyFixtureParent implements HierarchyFixtureSubinterface {
    // Exists only for hierarchy mapping; no members.
  }