private static String getXtextKey(String preferenceContainerID, String preferenceName) {
		return GENERATOR_PREFERENCE_TAG + PreferenceConstants.SEPARATOR + preferenceContainerID
				+ PreferenceConstants.SEPARATOR + preferenceName;
	}
private static String getXtextKey ( String preferenceContainerID , String preferenceName ) { return GENERATOR_PREFERENCE_TAG + PreferenceConstants . SEPARATOR + preferenceContainerID + PreferenceConstants . SEPARATOR + preferenceName ; }
Create a preference key according to the Xtext option block standards.

@param preferenceContainerID the identifier of the generator's preference container.
@param preferenceName the name of the preference.
@return the key.