sig/resolver/system.rbs in httpx-0.17.0 vs sig/resolver/system.rbs in httpx-0.18.0

@@ -3,9 +3,11 @@
     class System
       include ResolverMixin
 
       RESOLV_ERRORS: Array[singleton(StandardError)] # ResolvError
 
+      attr_reader state: Symbol
+
       def closed?: () -> true
 
       def empty?: () -> true
 
       def <<: (Connection) -> void
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