@SuppressWarnings("ResultOfMethodCallIgnored")
	public String geUserLibraryClassPath(PerfTest perfTest) {
		File perfTestDirectory = getDistributionPath(perfTest);
		File libFolder = new File(perfTestDirectory, "lib");

		final StringBuffer customClassPath = new StringBuffer();
		customClassPath.append(".");
		if (libFolder.exists()) {
			customClassPath.append(File.pathSeparator).append("lib");
			libFolder.list((dir, name) -> {
				if (name.endsWith(".jar")) {
					customClassPath.append(File.pathSeparator).append("lib/").append(name);
				}
				return true;
			});
		}
		return customClassPath.toString();
	}
Build user library classpath on the given {@link PerfTest}.

@param perfTest perftest
@return custom class path.
ngrinder-controller/src/main/java/org/ngrinder/perftest/service/PerfTestService.java