field

Attribute of the parameter to access, if possible.

If null, this just inserts the value of the nth parameter itself. Otherwise this causes a lookup of the specified value.

If e.g. the nth value is "justjanne", and this field is set to ParameterField.VERIFIED_IDENT, it’ll look up the ident of justjanne in the current context, try to verify it, and set it to * otherwise.