anchor.diff:  exactlyOneOrDefault      |X |                                                       | 
   exists                   |X |                                                       | 
   find                     |X |                                                       | 
  -groupBy                  |  | Initially only very simple groupBy is supported       | 
  +groupBy                  |x | Initially only very simple groupBy (and having) is supported: on single-table with single-key-column. | 
   groupJoin                |  |                                                       | 
   groupValBy	             |  |                                                       | 
   head                     |X |                                                       | 
  
positive.code: last                     |  |                                                       | 
  lastOrDefault            |  |                                                       | 
  leftOuterJoin            |  |                                                       | 
  let                      |X | ...but not using tmp variables in where-clauses       |
  maxBy                    |X |                                                       | 
  maxByNullable            |X |                                                       | 
  minBy                    |X |                                                       | 
  
negative.code: thenByDescending	     |X |                                                       |   
  thenByNullable           |X |                                                       | 
  thenByNullableDescending |X |                                                       |
  where                    |x | Server side variables must be on left side and only left side of predicates (excluding parentheses, boolean database fields and LINQ-Contains) | 
  *)
  
  (**
  