The zoml_to_csv function takes a value that implements the ToString trait, converts it to a string using the to_string method, then splits the string on newline characters (\n) to create an iterator of lines. For each line, it splits the string on double colon characters (::) to create an iterator of fields, converts each field to a String, and collects them into a vector. Finally, it collects all the vectors of fields into a single vector of rows, which is returned as the result of the function.