OptionalFieldsOptionalStrategysuffix = apply Template and probe for collisions appending ' {n}'; increment = numeric/versioned bump; prompt = user must supply; none = leave untouched. Default 'suffix'.
OptionalTemplateTemplate for the name field and any string unique field with no other rule. '{Name}' interpolates the source value; '{n}' the collision counter. Default 'Copy of {Name}'.
Fields the template applies to. Default: the entity's NameField plus every IsUnique string field not otherwise handled.