return a table of country information for the requested c_code, as reported in FishBASE.org
Usage
c_code(c_code = NULL, server = NULL, ...)
Arguments
c_code
a C_Code or list of C_Codes (FishBase country code)
server
can be set to either "fishbase" or "sealifebase" to switch between databases. NOTE: it is usually
easier to leave this as NULL and set the source instead using the environmental variable `FISHBASE_API`, e.g.
`Sys.setenv(FISHBASE_API="sealifebase")`.