title: How do I get and set ag-grid state?
body: <p>How can I obtain and re-set the state of an ag-grid table? I mean, which columns are being show, in what order, with what sorting and filtering, etc.</p>
  
  <p><strong>Update</strong>: getColumnState and setColumnState seem to be close to what I want, but I cannot figure out the callbacks in which I should save and restore the state. I tried restoring it in onGridReady but when the actual rows are loaded, I lose the state.</p>