private boolean isUsefulForForemostReferenceProject(String path) {
		return junitContext && new File(path).isDirectory()
				&& path.contains(File.separator + "ngrinder-runtime" + File.separator);
	}
Construct the classpath of ngrinder which is very important and located in the head of
classpath.

@param classPath classpath string
@param logger    logger
@return classpath optimized for grinder.
ngrinder-core/src/main/java/net/grinder/util/AbstractGrinderClassPathProcessor.java