Gets all MIME headers from a stream and returns a list of tuples (key, value). The returned list can be supplied as headers parameter to the add-mime-headers expression function.
get-mime-headers(s:stream) -> list of (string, string)  | 
Name  | 
Type  | 
Description  | 
|---|---|---|
s  | 
stream  | 
Specifies the input stream.  |