isSubtypeOf method Null safety
- TypeMirror other
Checks the subtype relationship, denoted by
<: in the language
This is the type relationship used in
is test checks.
Note that this method can only be invoked successfully if all the
supertypes of the receiver are covered by the reflector, and a
TypeRelationsCapability has been requested.
bool isSubtypeOf(TypeMirror other);