class_docstr: Uses the same visitor pattern as c_ast.NodeVisitor, but modified to
  return a value from each visit method, using string accumulation in
  generic_visit.
class_docstr_tok: ["Uses","the","same","visitor","pattern","as","c_ast.NodeVisitor",",","but","modified","to","return","a","value","from","each","visit","method",",","using","string","accumulation","in","generic_visit","."]
code: def _visit_expr(self, n):
      if isinstance(n, c_ast.InitList):
          return "{" + self.visit(n) + "}"
      elif isinstance(n, c_ast.ExprList):
          return "(" + self.visit(n) + ")"
      else:
          return self.visit(n)
  
imports: from .None import c_ast
label_desc: Use image node_id 15 for calling the CGenerator obj's underlying member method code with example usage: obj._visit_expr(n) and returns: unknown, unknown, self