time: YYYY-MM-DD HH:MM:SSZ
DETAILS ::= BRACKETED | MULTIPART
-BRACKETED ::= '[' CR lines ']' CR
+BRACKETED ::= '[' CR UTF8-lines ']' CR
MULTIPART ::= '[ multipart' CR PART* ']' CR
PART ::= PART_TYPE CR NAME CR PART_BYTES CR
PART_TYPE ::= Content-Type: type/sub-type(;parameter=value,parameter=value)