validate_codebook: Validate generated codebook against DDI Codebook 2.5
Description
Validates your constructed codebook against the
DDI Codebook 2.5 schema. While all built-in ddi_ functions
are written with the schema in mind, this is useful
if you create your own DDI nodes (there are many and
it will take a while to implement all of them).
Usage
validate_codebook(codebook)
Value
A logical (with attributes containing any errors) that indicates passing or failing.