- If the "iterateOver" field contains neither "," or "/" ("," is for additive associations, see below) then it is treated as an iterator over a metadata field, just as described under Specifying Entities Manual entities, section "Create Extracting Entities from Arrays of Items".
- To iterate just over a single entity type, use "dummy", eg "entity1/dummy" or "entity2,dummy" (The '/' vs ',' are equivalent in this case).
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