 heading="Group Items By Property">
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					You can also group the items by propery that you want, in order to to that, provide the "group-by" attribute.
					<br />Also, you need to provide "groupByTextProvider" callback in the extra-settings attribute, in order to provide the header text for each group.
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						Note: If you won't specify the "groupByTextProvider" callback in order to get the
						header for each group, the value of the