code: @Override
  	public String getString(String key) {
  		if(properties != null) {
  			String property = properties.getProperty(key);
  			if(property == null) {
  				return key;
  			}
  			else {
  				return property;
  			}
  		}
  		return null;
  	}
docs: /* (non-Javadoc)
  @see com.socialize.i18n.LocalizationService#getString(android.content.Context, java.lang.String)