MaxGap constructor
Creates a widget that takes, at most, the specified mainAxisExtent of
space in a Row, Column, or Flex widget.
The mainAxisExtent must not be null and must be positive.
The crossAxisExtent must be either null or positive.
Implementation
const MaxGap(
  this.mainAxisExtent, {
  Key? key,
  this.crossAxisExtent,
  this.color,
}) : super(key: key);