Based on the documentation, predict is a polymorphic function in R and a different function is actually called depending on what is passed as the first argument.

However, the documentation does not give any information about the names of the functions that predict actually invokes for any particular class.

Normally, one could type the name of a function to get its source, but this does not work with predict.

If I want to view the source code for the predict function when invoked on objects of the type glmnet, what is the easiest way?