To perform any of the SheetSearch operations, you will first need to initialize the SheetSearch API and connect it to an existing sheet. To do this, simply pass the sys ID of the sheet you are working with into the initialization:
// Replace the SYS ID with your sheet's SYS ID
var sheet = new x_vivid_sheets.SheetSearch('a5431dcc1b580210cf82ece03d4xcbab');
Once initialized, you can perform the other operations available in the SheetSearch API.