check is a generic function for validating the inputs of class objects.
# S3 method for id_attributes
check(object, ...)# S3 method for input_mats
check(object, ...)
# S3 method for params_lm
check(object, ...)
# S3 method for params_mlogit
check(object, ...)
# S3 method for params_surv
check(object, ...)
# S3 method for params_surv_list
check(object, ...)
# S3 method for tparams_mean
check(object, ...)
# S3 method for tparams_transprobs
check(object, ...)
check(object, ...)
If validation is successful, returns the object in question; otherwise, informs the user that an error has occurred.
object to check.
Further arguments passed to or from other methods.