A value accepted by PdfDocument.setFormFieldValue. Interpretation
depends on the field type: boolean toggles a checkbox; a string sets text,
selects a radio export value, or selects one choice option by its label; and
a string[] selects choice options by label (including single-select
combo/list fields when replaying history).
A value accepted by PdfDocument.setFormFieldValue. Interpretation depends on the field type:
booleantoggles a checkbox; astringsets text, selects a radio export value, or selects one choice option by its label; and astring[]selects choice options by label (including single-select combo/list fields when replaying history).