The default animation fades the new page in while translating it upwards, starting from about 25% below the top of the screen.
T>( PageRoute< T>route, BuildContext context, Animation< double>animation, Animation< double>secondaryAnimation, Widget child) → Widget
Wraps the child with one or more transition widgets which define how
routearrives on and leaves the screen. [...]override
Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
) → String
Returns a string representation of this object.