PyNamedTupleType.getMemberNames implementation which has been lost after rebase

python/src/com/jetbrains/python/codeInsight/stdlib/PyNamedTupleType.java

@@ -33,6 +33,7 @@ import org.jetbrains.annotations.Nullable;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
+import java.util.Set;
 
 /**
  * @author yole
@@ -112,6 +113,15 @@ public class PyNamedTupleType extends PyClassTypeImpl implements PyCallableType
     return "PyNamedTupleType: " + myName;
   }
 
+  @NotNull
+  @Override
+  public Set<String> getMemberNames(boolean inherited, @NotNull TypeEvalContext context) {
+    final Set<String> result = super.getMemberNames(inherited, context);
+    result.addAll(myFields);
+
+    return result;
+  }
+
   public int getElementCount() {
     return myFields.size();
   }