protected virtual DbGroupExpressionBinding VisitGroupExpressionBinding(DbGroupExpressionBinding binding) { DbGroupExpressionBinding result = binding; if (binding != null) { DbExpression newInput = this.VisitExpression(binding.Expression); if (!object.ReferenceEquals(binding.Expression, newInput)) { result = CqtBuilder.GroupBindAs(newInput, binding.VariableName, binding.GroupVariableName); this.RebindVariable(binding.Variable, result.Variable); this.RebindVariable(binding.GroupVariable, result.GroupVariable); } } return(result); }