private void loadTOCs() {

		for (HelpModuleLocation location : helpLocations) {
			if (!location.isHelpInputSource()) {
				continue;
			}

			if (inputHelp != null) {
				throw new IllegalArgumentException("Cannot have more than one source input " +
					"help module.  Found a second input module: " + location);
			}

			inputHelp = location;
		}
	}
Creates a help module collection that assumes zero or more pre-built help jar files and
one help directory that is an input into the help building process.
@param locations the locations from which to get help
@return the help collection
Ghidra/Framework/Help/src/main/java/help/validator/location/HelpModuleCollection.java