Return type: Switch
Returns:       Returns true if the entity or attribute is a subdocument entity, and false otherwise. Replacing is with isnt will reverse the results.

Syntax

entity (is | isnt) subdoc-entity
OR
attribute attribute-name (is | isnt) subdoc-entity

An entity or attribute test that succeeds if the entity or attribute is an external subdocument entity.

Related Concepts    Entities

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