handle property Null safety

SliverOverlapAbsorberHandle handle

The object to notify when markNeedsLayout is called.

Implementation

SliverOverlapAbsorberHandle get handle => _handle;
void handle=(SliverOverlapAbsorberHandle value)

Setting this will trigger notifications on the new object.

Implementation

set handle(SliverOverlapAbsorberHandle value) {
  assert(value != null);
  if (handle == value)
    return;
  _handle = value;
  handle._markNeedsLayout();
}