function openSuggestions(oSF) {
		if (oSF.getEnableSuggestions()) {
			if (!oSF._oSuggest) {
				oSF._oSuggest = new Suggest(oSF);
			}
			oSF._oSuggest.open();
		}
	}
Opens the suggestions list.

@param {sap.m.SearchField} oSF a SearchField instance