constraints property Null safety

@protected void constraints=(BoxConstraints constraints)

constraints is used internally.

Implementation

@protected
set constraints(BoxConstraints constraints) {
  if (_constraints != null) {
    final _constraints = this._constraints!;

    if ((_constraints.maxWidth != constraints.maxWidth) |
        (_constraints.maxHeight != constraints.maxHeight)) {
      remove();

      WidgetsBinding.instance!.addPostFrameCallback(show);
    }
  }

  _constraints = constraints;
}