Return estimated coefficients from a fitted pliable model.
# S3 method for pliable
coef(object, lambda = NULL, ...)object returned from a call to pliable
values of lambda at whcih predictions are desired. If NULL (default), the path of lambda values from the fitted model. are used. If lambda is not NULL, the predictions are made at the closest values to lambda in the lambda path from the fitted model;
Further arguments (not used)
@return estimated parameters