code: public static String getString(IPreferenceStore store, String preferenceContainerID, String preferenceName) {
  		return store.getString(getPrefixedKey(preferenceContainerID, preferenceName));
  	}
docs: Replies the preference value from the given store.
  
  @param store the preference storE.
  @param preferenceContainerID the identifier of the generator's preference container.
  @param preferenceName the name of the preference.
  @return the key.