Function librdkafka_sys::rd_kafka_msg_partitioner_consistent

pub unsafe extern "C" fn rd_kafka_msg_partitioner_consistent(
    rkt: *const rd_kafka_topic_t, 
    key: *const c_void, 
    keylen: size_t, 
    partition_cnt: int32_t, 
    opaque: *mut c_void, 
    msg_opaque: *mut c_void
) -> int32_t