fnContainsOrEquals = function(oDomRefContainer, oDomRefChild) {
		if (oDomRefChild && oDomRefContainer && oDomRefChild != document && oDomRefChild != window) {
			return oDomRefContainer.contains(oDomRefChild); //native a.contains(b) also returns true if a === b
		}
		return false;
	}
Returns whether <code>oDomRefChild</code> is contained in or equal to <code>oDomRefContainer</code>.

For compatibility reasons it returns <code>true</code> if <code>oDomRefContainer</code> and
<code>oDomRefChild</code> are equal.

This method intentionally does not operate on the jQuery object, as the original <code>jQuery.contains()</code>
method also does not do so.

@function
@since 1.58
@param {Element} oDomRefContainer The container element
@param {Element} oDomRefChild The child element (must not be a text node, must be an element)
@return {boolean} Whether <code>oDomRefChild</code> is contained in or equal to <code>oDomRefContainer</code>
@public
@alias module:sap/ui/dom/containsOrEquals