function _extractTextsFromItem(oItem, vTextGetter) {
		var vTexts, fnGetter;

		switch (typeof vTextGetter) {
			case "function":
				vTexts = vTextGetter(oItem);
				break;
			case "string":
			case "undefined":
				fnGetter = oItem[vTextGetter || DEFAULT_TEXT_GETTER_NAME];
				vTexts = typeof fnGetter === "function" ? fnGetter.call(oItem) : "";
				break;
			default:
				vTexts = "";
				break;
		}

		return Array.isArray(vTexts) ? vTexts : [vTexts];
	}
Extracts a text from an object.

@param oItem {Object}
@param vTextGetter {string|function}
@returns {Array<string>}
@private