Returns a list of services
wf_services(user, simplify = TRUE)
user (email address) used to sign up for the ECMWF data service,
used to retrieve the token set by wf_set_key
simplify the output, logical (default = TRUE
)
returns a nested list or data frame with the ECMWF services
if (FALSE) { # \dontrun{
# set key
wf_set_key(user = "test@mail.com", key = "123")
# get a list of services
wf_services("test@mail.com")
# get a list of datasets
wf_services("test@mail.com")
} # }