This event is dispatched when a merged event marker group is deselected.
Array of event marker info:[{ id, //String event marker id chartId, //String chart id seriesId, //String series id groupId, //String group id groupedDate, //Date date, //Source date customAttributes, //Object with custom attributes map. Key is custom attribute name bounds: {// Object with event marker pixel bounds (if visible) x, //Number y, //Number width, //Number height //Number } }]
onMergedEventMarkerSelect