Graph:
A -- B
Solution with seed 0:
NESTED_LOOP_JOIN
---leftEmbeddingField: (none)
---rightEmbeddingField: b
---joinPredicates:
------a = b
---Outer:
------COLLSCAN
---------ns = test.a
---------filter = $and
---------nodeId = 1
---------fetched = 1
---------sortedByDiskLoc = 0
---------providedSorts = {baseSortPattern: {}, ignoredFields: []}
---Inner:
------COLLSCAN
---------ns = test.b
---------filter = $and
---------nodeId = 2
---------fetched = 1
---------sortedByDiskLoc = 0
---------providedSorts = {baseSortPattern: {}, ignoredFields: []}

Solution with seed 1:
NESTED_LOOP_JOIN
---leftEmbeddingField: b
---rightEmbeddingField: (none)
---joinPredicates:
------b = a
---Outer:
------COLLSCAN
---------ns = test.b
---------filter = $and
---------nodeId = 1
---------fetched = 1
---------sortedByDiskLoc = 0
---------providedSorts = {baseSortPattern: {}, ignoredFields: []}
---Inner:
------COLLSCAN
---------ns = test.a
---------filter = $and
---------nodeId = 2
---------fetched = 1
---------sortedByDiskLoc = 0
---------providedSorts = {baseSortPattern: {}, ignoredFields: []}

