public static String computeMatcherString(String path, String glob) {
			return "glob:" + (path.length() == 0 ? "" : path + (path.endsWith("/") ? "" : "/")) + (glob.length() == 0 ? "*" : glob);
		}
This computes the string that will be used to construct a PathMatcher that will
attempt to match the S3 keys.

@param path The step's `path` parameter.
@param glob The step's `glob` parameter.
@return A string that can be used to construct a PathMatcher.
src/main/java/de/taimos/pipeline/aws/S3FindFilesStep.java