This object gives the user read-only access to typed data within the field being validated. If the type of
the field is date/time, a double is returned. Correspondingly, a double is returned for a double
field type, and an integer returned for an integer field type.
Note that if the field is a composite with subfields, the validation_field may be null but has
subfields that are non-null. It is the user's responsibility to check the subfields if needed.
The table below notes the differences in the validation_field objects between the parser engines:
Parser Versions 3.211.245 to 4.5
Parser Version 5.0 and Up
The object is typed (i.e. may be a double, string, or integer) and is called value.
It is untyped (i.e. always a string) and is called value.