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This is the same as iterating over a metadata array to obtain entities using Manual entities.
See detailed example below
Iterate Over a Single Entity Type:
Use "dummy" to iterate over only one entity type,
eg "entity1/dummy" or "entity2,dummy"
See detailed example below
Multiplicative:
Create one association for every combination of entities of specified types
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eg. "iterateOver": "entity1,entity2"
See detailed example below
Iterate Over a Single Entity Type:
A less common scenario is when you want to use "dummy" to iterate over only one entity type,
eg "entity1/dummy" or "entity2,dummy"
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creationCriteriaScripts
Association fields generated from the entity loop are placed in "_iterator". For example, for "iterateOver": "entity1/entity2/geo_index", an _iterator object with the following fields is available in the Javascript: "_iterator.entity1_index", "_iterator.entity2_index", "_iterator.geo_index".
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