Move the *properties* iterator to the next (key,value) pair
If *properties* is already pointing at the last pair then the iterator
will be moved to a point just beyond that last pair, (where
notmuch_message_properties_valid will return FALSE).
See the documentation of notmuch_message_get_properties for example
code showing how to iterate over a notmuch_message_properties_t object.
Move the *properties* iterator to the next (key,value) pair
If *properties* is already pointing at the last pair then the iterator will be moved to a point just beyond that last pair, (where notmuch_message_properties_valid will return FALSE).
See the documentation of notmuch_message_get_properties for example code showing how to iterate over a notmuch_message_properties_t object.
@since libnotmuch 4.4 (notmuch 0.23)