extract_symbols passes its argument to ipairs, so we check if result (passed to extract_symbols) is a table before calling extract_symbols. This should have the effect of only updating the current function when we've gotten a valid value from the server.
extract_symbolspasses its argument toipairs, so we check ifresult(passed toextract_symbols) is a table before callingextract_symbols. This should have the effect of only updating the current function when we've gotten a valid value from the server.