diagnostics() returns the structured diagnostics carried by a compiled
spec or fitted model artifact. fit_status() is the compact status string
recorded by the optimizer certificate for fitted models.
Usage
diagnostics(fit, severity = NULL, stage = NULL, ...)
# S3 method for class 'mm_compiled'
diagnostics(fit, severity = NULL, stage = NULL, ...)
fit_status(fit, ...)
# S3 method for class 'mm_fit'
fit_status(fit, ...)
# S3 method for class 'mm_compiled'
fit_status(fit, ...)