Grid methods

exec	Allows triggering the Grid actions
getColumn	Gets an object with the column configuration
getReactiveState	Gets the state object with the reactive properties of the Grid
getRow	Gets an object with the row configuration
getState	Gets the state object that stores current state of most Grid properties
getStores	Gets an object with the DataStore properties of the Grid
intercept	Allows intercepting and blocking/modifying actions
on	Allows attaching a handler to the inner events
setNext	Allows adding some action into the Event Bus order