private String getFilenamePostFix(String value) {
		value = trimToEmpty(value);
		if (isNotEmpty(value)) {
			value = "-" + value;
		}
		return value;
	}
Get distributable package name with appropriate extension.

@param packageDownloadInfo  information for downloading package
@param forWindow            if true, then package type is zip,if false, package type is tar.
@return String  module full name.
ngrinder-controller/src/main/java/org/ngrinder/packages/PackageHandler.java