center property
The first child in the GrowthDirection.forward growth direction.
Children after center will be placed in the axisDirection relative to the center. Children before center will be placed in the opposite of the axisDirection relative to the center.
The center must be a child of the viewport.
Implementation
RenderSliver get center => _center;
Implementation
set center(RenderSliver value) {
if (value == _center)
return;
_center = value;
markNeedsLayout();
}