super nodes are references.

Author: robrix

languages/tree-sitter-stack-graphs-java/src/stack-graphs.tsg

@@ -347,6 +347,26 @@ attribute node_symbol = node            => symbol = (source-text node), source_n
   ; node @expr.lexical_scope
 }
 
+(super) @super
+{
+  node @super.lexical_scope ; FIXME: move to the all-expressions rule
+
+  node expr_ref
+  node expr_ref__ns
+  node expr_ref__typeof
+
+  attr (expr_ref) node_reference = @super
+  edge expr_ref -> expr_ref__ns
+
+  attr (expr_ref__ns) push_symbol = "%E"
+  edge expr_ref__ns -> @super.lexical_scope
+
+  edge @super.type -> expr_ref__typeof
+
+  attr (expr_ref__typeof) push_symbol = ":"
+  edge expr_ref__typeof -> expr_ref
+}
+
 (method_invocation
   object: (super)
   name: (identifier) @method_name) @method_invocation {