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sdk.git
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99679b51d894c4c43da7e39b54688e96f65f86e2
/
.
/
pkg
/
front_end
/
parser_testcases
/
extensions
/
covariant.dart
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class
A
{}
class
C
extends
A
{}
extension on C
{
addChild
(
covariant A child
)
{}
}