GIN assumes that indexable
operators are strict. This means that
extractValue will not be called at all on a null
item value (instead, a placeholder index entry is created
not be called on a null query value either (instead, the query is
presumed to be unsatisfiable). Note however that null key values
contained within a non-null composite item or query value are
If you see anything in the documentation that is not correct, does not match your experience with the particular feature or requires further clarification, please use this form to report a documentation issue.