Delphi-PRAXiS - TFDCommand Verständnis von Klassen

wenn eine Klasse nur aus einer Liste von Properties besteht, was bedeutet dies eigentlich ?
Welche Funktion hat diese Code Zeile

Delphi-Quellcode:

[ComponentPlatformsAttribute(pidAllPlatforms)]

Delphi-Quellcode:

			
[ComponentPlatformsAttribute(pidAllPlatforms)]

  TFDCommand = class(TFDCustomCommand)

  published

    property ConnectionName;

    property Connection;

    property Transaction;

    property CatalogName;

    property SchemaName;

    property BaseObjectName;

    property Overload;

    property Params;

    property Macros;

    property FetchOptions;

    property FormatOptions;

    property ResourceOptions;

    property UpdateOptions;

    property CommandKind;

    property CommandText;

    property ActiveStoredUsage;

    property Active;

    property BeforeClose;

    property BeforeOpen;

    property AfterClose;

    property AfterOpen;

    property BeforeUnprepare;

    property BeforePrepare;

    property AfterUnprepare;

    property AfterPrepare;

    property BeforeExecute;

    property AfterExecute;

    property OnError;

    property OnCommandChanged;

  end;