public AbstractChart<T, S> setBarMargin(Integer margin) {
		getChartConfiguration().seriesDefaultsInstance().rendererOptionsInstance()
				.setBarMargin(margin);
		return this;
	}
public AbstractChart < T , S > setBarMargin ( Integer margin ) { getChartConfiguration ( ) . seriesDefaultsInstance ( ) . rendererOptionsInstance ( ) . setBarMargin ( margin ) ; return this ; }
@param margin Set value of margin
@return AbstractChart