AbstractError in abstract methods

Original Reporter info from Mantis: Ryan

• Reporter name:

Description:

using the word "system" in abstract methods causes error: identifier idents no member “AbstractError”.

Steps to reproduce:

type
	TAbstractClass = class
		function GetLocation (system: TObject): TPoint; virtual; abstract;
	end;

Mantis conversion info:

• Mantis ID: 32538
• OS Build: 10.13
• Platform: Mac
• Version: 3.1.1