protected abstract ShapedQueryExpression TranslateThenBy(ShapedQueryExpression source, LambdaExpression keySelector, bool ascending);
protected abstract ShapedQueryExpression TranslateSum(ShapedQueryExpression source, LambdaExpression selector, Type resultType);
protected abstract ShapedQueryExpression TranslateTake(ShapedQueryExpression source, Expression count);
protected abstract ShapedQueryExpression TranslateSelectMany(ShapedQueryExpression source, LambdaExpression selector);
protected abstract ShapedQueryExpression TranslateSingleOrDefault(ShapedQueryExpression source, LambdaExpression predicate, Type returnType, bool returnDefault);
protected abstract ShapedQueryExpression TranslateDefaultIfEmpty(ShapedQueryExpression source, Expression defaultValue);
protected abstract ShapedQueryExpression TranslateSelectMany(ShapedQueryExpression source, LambdaExpression collectionSelector, LambdaExpression resultSelector);
protected abstract ShapedQueryExpression TranslateLongCount(ShapedQueryExpression source, LambdaExpression predicate);
protected abstract ShapedQueryExpression TranslateOfType(ShapedQueryExpression source, Type resultType);
protected abstract ShapedQueryExpression TranslateIntersect(ShapedQueryExpression source1, ShapedQueryExpression source2);
protected abstract ShapedQueryExpression TranslateLeftJoin(ShapedQueryExpression outer, ShapedQueryExpression inner, LambdaExpression outerKeySelector, LambdaExpression innerKeySelector, LambdaExpression resultSelector);
protected abstract ShapedQueryExpression TranslateGroupBy(ShapedQueryExpression source, LambdaExpression keySelector, LambdaExpression elementSelector, LambdaExpression resultSelector);
protected abstract ShapedQueryExpression TranslateElementAtOrDefault(ShapedQueryExpression source, Expression index, bool returnDefault);
protected abstract ShapedQueryExpression TranslateDistinct(ShapedQueryExpression source);
protected abstract ShapedQueryExpression TranslateUnion(ShapedQueryExpression source1, ShapedQueryExpression source2);
protected abstract ShapedQueryExpression TranslateReverse(ShapedQueryExpression source);
protected abstract ShapedQueryExpression TranslateWhere(ShapedQueryExpression source, LambdaExpression predicate);
protected abstract ShapedQueryExpression TranslateContains(ShapedQueryExpression source, Expression item);
