toString method
A string representation of this object.
Some classes have a default textual representation,
often paired with a static parse function (like int.parse).
These classes will provide the textual representation as
their string representation.
Other classes have no meaningful textual representation
that a program will care about.
Such classes will typically override toString to provide
useful information when inspecting the object,
mainly for debugging or logging.
Implementation
@override
String toString() => (ToString(runtimeType)
      ..add('scrollDirection', scrollDirection)
      ..add('reverse', reverse)
      ..add('controller', controller)
      ..add('primary', primary)
      ..add('physics', physics)
      ..add('height', height)
      ..add('gridDelegate', gridDelegate)
      ..add('width', width))
    .toString();