One attribute value as a model holds it, as model.getAttribute returns it: a text, a number,
true or false, null when the attribute is unset, { enum } for an enumeration value,
{ type, value } for a typed value, { ref } for a reference to another entity, or a list of
these.
One attribute value as a model holds it, as
model.getAttributereturns it: a text, a number, true or false,nullwhen the attribute is unset,{ enum }for an enumeration value,{ type, value }for a typed value,{ ref }for a reference to another entity, or a list of these.