final List<BottomNavigationBarItem> items;

  /// If [SnakeBarBehaviour.floating] this color is
  /// used as background color of shaped view.
  /// If [SnakeBarBehaviour.pinned] this color just
  /// a background color of whole [SnakeNavigationBar] view
  final Gradient backgroundGradient;

  /// This color represents a SnakeView and unselected
  /// Icon and label color
  final Gradient snakeViewGradient;

  /// This color represents a selected Icon color
  final Gradient selectedItemGradient;

  /// This color represents a unselected Icon color
  final Gradient unselectedItemGradient;

  /// Whether the labels are shown for the selected [BottomNavigationBarItem].
  final bool showSelectedLabels;

  /// Whether the labels are shown for the selected [BottomNavigationBarItem].
  final bool showUnselectedLabels;

  /// The index into [items] for the current active [BottomNavigationBarItem].
  final int currentIndex;

  ///You can specify custom elevation shadow color
  final Color shadowColor;

  /// Defines the [SnakeView] shape and behavior of a [SnakeNavigationBar].
  ///
  /// See documentation for [SnakeShape] for information on the
  /// meaning of different shapes.
  ///
  /// Default is [SnakeShape.circle]
  final SnakeShape snakeShape;

  /// Defines the layout and behavior of a [SnakeNavigationBar].
  ///
  /// See documentation for [SnakeBarBehaviour] for information on the
  /// meaning of different styles.
  ///
  /// Default is [SnakeBarBehaviour.pinned]
  final SnakeBarBehaviour behaviour;

  /// You can define custom [ShapeBorder] with padding and elevation to [SnakeNavigationBar]
  final ShapeBorder shape;
  final EdgeInsets padding;
  final double elevation;

  /// Called when one of the [items] is pressed.
  final ValueChanged<int> onTap;