Takes a list of streams and combines them into a multipart/subtype.
mime-multipart-from-list(subtype:string, s:list of stream) -> stream  | 
Name  | 
Type  | 
Description  | 
|---|---|---|
subtype  | 
string  | 
Specifies the multipart/subtype to use.  | 
s  | 
list of stream  | 
Specifies the input list of streams.  |