When an explicitly defined type variable is used in an incorrect
variance position in a method (whether in the return or the
parameters), an error is emitted.
Change-Id: I7e49687579bb2ce6e293b052b657b98741cb04f8
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/122740
Commit-Queue: Kallen Tu <kallentu@google.com>
Reviewed-by: Leaf Petersen <leafp@google.com>
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Kallen Tu
94e312f7a6