Provides a dataframe of all portfolios owned by the investor.
lc_PortfoliosOwned(LC_CRED = NULL)
Credential object having class LendingClub_credential. This object can be created using the lc_MakeCredential()
function. You can pass the object directly as an argument to the function or alternatively, it can be read from the global environment if it was stored as "LC_CRED".