This object is used to encapsulate state for parameters to an Open Graph share dialog that opens in the Facebook app.
The Open Graph action to be published.
@property (nonatomic, retain) id<FBOpenGraphAction> action;
The fully qualified type of the Open Graph action.
@property (nonatomic, copy) NSString *actionType;
The name of the property representing the primary target of the Open Graph action, which will be displayed as a preview in the dialog.
@property (nonatomic, copy) NSString *previewPropertyName;