RenderConstrainedBox constructor
Creates a render box that constrains its child.
The additionalConstraints argument must not be null and must be valid.
Implementation
RenderConstrainedBox({
RenderBox child,
@required BoxConstraints additionalConstraints,
}) : assert(additionalConstraints != null),
assert(additionalConstraints.debugAssertIsValid()),
_additionalConstraints = additionalConstraints,
super(child);