Represents the "Kids" entry of the fdf field dictionary object.

It is an optional entry defined as part of the PDF 1.0 specification.

It contains an array which contains FieldElements.

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 246, page 461.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 249, page 559.

The Kids array lists child FDF field dictionaries, mirroring the field tree structure of the target AcroForm. Only branches containing fields with data to transfer need to appear.