code: public static String load(final String cowfileSpec) {
  		String effectiveCowfileSpec = (cowfileSpec != null) ? cowfileSpec.trim() : DEFAULT_COW;
  		if (effectiveCowfileSpec.length() > 0) {
  			if (!effectiveCowfileSpec.endsWith(COWFILE_EXT)) {
  				effectiveCowfileSpec += COWFILE_EXT;
  			}
  			InputStream cowInputStream;
  			if (effectiveCowfileSpec.indexOf(File.separatorChar) >= 0) {
  				cowInputStream = getCowFromPath(effectiveCowfileSpec);
  			} else {
  				cowInputStream = getCowFromCowPath(effectiveCowfileSpec);
  			}
  			if (cowInputStream == null) {
  				// Maybe there should be a verbose mode where we log this sort of error instead of silently failing?
  				cowInputStream = getCowFromResources(DEFAULT_COW + COWFILE_EXT);
  			}
  			if (cowInputStream != null) {
  				String cow = cowInputStreamToString(cowInputStream);
  				return cow;
  			}
  		}
  		return null;  // should never happen
  	}
docs: Call this with the provided cowfileSpec - that is the value passed to `-f` on the commandline.
  
  @param cowfileSpec If cowfileSpec contains a filepath separator it is interpreted as relative to CWD
  otherwise the COWPATH will be searched. If not found on the COWPATH we will search for a bundled cowfile.
  @return The content of the specified cowfile (or default cowfile if cowfileSpec is null or empty).