AContext parameter in TMVCController methods is redundant

[fastbike]

I've noticed two of the TMVCController class methods include AContext as a parameter.
procedure OnBeforeAction(AContext: TWebContext; const AActionName: string; var AHandled: Boolean); virtual;
procedure OnAfterAction(AContext: TWebContext; const AActionName: string); virtual;

Given that Context is available as a class property - is this now redundant ?
If it is, will removing this be too much of a breaking change ?

(originally created as part of #514 now split into separate issue)

[fastbike]

@danieleteti

Yes the AContext param will be removed in 4.0.0-oxygen. It will break all the action filter methods, but a bit of cleaning is OK for a major version upgrade.