The state of the grid row can be set as hidden by calling GridView.setHidden and setHiddenRows. The hidden rows will not be displayed in the grid and cannot refer the object of Grid Row. They can be created again through setHiddenRow or unhideAllRows and displayed in the grid.
You can display the data row index and check the hidden state of the row in Row Indicator.
Hidden Row Count: 0 rows.
Set the focused row as a hidden state.
Set the selected rows as a hidden state.
Unhide all the hidden rows.
Get the index of the hidden data rows.