returns an object containing the format name and the format specified for the given cell
| row | number | the row id |
| column | number | the column id |
| page | string | optional, the name of the sheet |
| object | an object with the format name and the format itself (a string of formatting conditions, separated by semicolons) |
const name = $$("ssheet").getFormat(2, 1, "Sheet1");
// -> {"name":"price","format":"[>=0][$$]#,0.00;[<0]-[$$]#,0.00"}
Note that the method returns null if a cell has no assigned format.