 stop(gettextf("unable to find an inherited method for function %s for signature %s",             sQuote(fdef@generic), sQuote(cnames)), domain = NA)    }    else stop("Internal error in finding inherited methods; didn't return a unique method",         domain = NA)})(list("NULL", "character", "tbl_df"), new("standardGeneric",     .Data = function (conn, name, value, ...)     standardGeneric("dbWriteTable"), generic = structure("dbWriteTable", package = "DBI"),     package = "DBI", group = list(), valueClas