public GroupByAggregateTranslatingExpressionVisitor(RelationalProjectionExpressionVisitor projectionExpressionVisitor)
{
_projectionExpressionVisitor = projectionExpressionVisitor;
_queryModelVisitor = projectionExpressionVisitor.QueryModelVisitor;
_groupQuerySource = projectionExpressionVisitor._querySource;
_sqlTranslatingExpressionVisitorFactory = projectionExpressionVisitor._sqlTranslatingExpressionVisitorFactory;
_entityMaterializerSource = projectionExpressionVisitor._entityMaterializerSource;
_selectExpression = _queryModelVisitor.TryGetQuery(_groupQuerySource);
}