Function gnunet_sys::GNUNET_CONTAINER_multipeermap_contains

pub unsafe extern "C" fn GNUNET_CONTAINER_multipeermap_contains(
    map: *const GNUNET_CONTAINER_MultiPeerMap, 
    key: *const GNUNET_PeerIdentity
) -> c_int

@ingroup hashmap Check if the map contains any value under the given key (including values that are NULL).

@param map the map @param key the key to test if a value exists for it @return #GNUNET_YES if such a value exists, #GNUNET_NO if not