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   1 # array pq\Gateway\Row::getIdentity()
   2
   3 Retrieve a list of columns and their values (the primary key, if it exists, else all columns) to identify the row in the table.
   4
   5 ## Params:
   6
   7 None.
   8
   9 ## Returns:
  10
  11 * array, list of columns and values identifying this row.
  12
  13 ## Throws:
  14
  15 * OutOfBoundsException, if a primary key column does not exist due to possible out-of-date cache.