Checks that combinations of task ID, output type and output type ID value
combinations are unique, by checking that there are no duplicate rows across
all tbl columns excluding the value column.
Arguments
- tbl
 a tibble/data.frame of the contents of the file being validated. Column types must all be character.
- file_path
 character string. Path to the file being validated relative to the hub's model-output directory.
- hub_path
 Either a character string path to a local Modeling Hub directory or an object of class
<SubTreeFileSystem>created using functionss3_bucket()orgs_bucket()by providing a string S3 or GCS bucket name or path to a Modeling Hub directory stored in the cloud. For more details consult the Using cloud storage (S3, GCS) in thearrowpackage. The hub must be fully configured with validadmin.jsonandtasks.jsonfiles within thehub-configdirectory.
