public static int calcFirstItemIndexOfPage(final PageRequest pageRequest, final int total) {
		return calcFirstItemIndexOfPage(pageRequest.getPage(), pageRequest.getSize(), total);
	}
public static int calcFirstItemIndexOfPage(final PageRequest pageRequest, final int total) {
		return calcFirstItemIndexOfPage(pageRequest.getPage(), pageRequest.getSize(), total);
	}
public static int calcFirstItemIndexOfPage ( final PageRequest pageRequest , final int total ) { return calcFirstItemIndexOfPage ( pageRequest . getPage ( ) , pageRequest . getSize ( ) , total ) ; }
Calculates first item index of the page.
Calculates first item index of the page .