A widget that sizes its child to the child's intrinsic height.This class is useful, for example, when unlimited height is available and you would like a child that would otherwise attempt to expand infinitely to instead size itself to a more reasonable height.The constraints that this widget passes to its child will adhere to the parent's constraints, so if the constraints are not large enough to satisfy the child's maximum intrinsic height, then the child will get less height than it otherwise would. Likewise, if the minimum height constraint is larger than the child's maximum intrinsic height, the child will be given more height than it otherwise would.