* Using a {@link DataGridConfig} object, access the {@link DataGridState} and place
* it in the {@link JspContext} under the attribute key set via {@link #setVar(String)}
*/
public void doTag() {
JspContext jspContext = getJspContext();
DataGridStateFactory factory = DataGridStateFactory.getInstance(jspContext);
assert factory != null;
DataGridState state = null;
if(_config != null)
state = factory.getDataGridState(_name, _config);
else
state = factory.getDataGridState(_name);
jspContext.setAttribute(_var, state);
}