     /// If sourceType is Camera will cause the assetType & maxSelectableCount & allowMultipleTypes & defaultSelectedAssets to be ignored.
     @objc public var sourceType: DKImagePickerControllerSourceType = .both
     
-    /// Whether allows to select photos and videos at the same time.
+    /// A Bool value indicating whether allows to select photos and videos at the same time.
     @objc public var allowMultipleTypes = true
     
-    /// Determines whether or not the rotation is enabled.
+    /// A Bool value indicating whether to allow the picker auto-rotate the screen.
     @objc public var allowsLandscape = false
     
     /// Set the showsEmptyAlbums to specify whether or not the empty albums is shown in the picker.
     @objc public var showsEmptyAlbums = true
     
+    /// A Bool value indicating whether to allow the picker shows the cancel button.
     @objc public var showsCancelButton = false
     
     /// The block is executed when user pressed the cancel button.

    /// The block is executed when user pressed the select button.
    @objc public var didSelectAssets: ((_ assets: [DKAsset]) -> Void)?
    
    @objc public var selectedChanged: (() -> Void)?
    
    @objc public var exportsWhenCompleted = false
    
    @objc public var exporter: DKImageAssetExporter?
    
    @objc public private(set) var exportStatus = DKImagePickerControllerExportStatus.none {
        didSet {
            self.exportStatusChanged?(self.exportStatus)
        }
    }
    
    @objc public var exportStatusChanged: ((DKImagePickerControllerExportStatus) -> Void)?
    
    @objc public private(set) lazy var groupDataManager: DKImageGroupDataManager = {
        let configuration = DKImageGroupDataManagerConfiguration()
        configuration.assetFetchOptions = self.createDefaultAssetFetchOptions()

    /// Allow swipe to select images.
    @objc public var allowSwipeToSelect: Bool = false
    
    /// A Bool value indicating whether the inline mode is enabled.
    @objc public var inline: Bool = false
    
    /// The type of picker interface to be displayed by the controller.
