supportParentDoubleTap property
Determines whether the parent node can receive a double tap. This is useful if allowParentSelect is true. This allows the user to double tap the parent node to expand or collapse the parent when allowParentSelect is true. IMPORTANT When true, the tap handler is delayed. This is because the double tap action requires a short delay to determine whether the user is attempting a single or double tap.
Implementation
final bool supportParentDoubleTap;