Function rdkafka_sys::bindings::rd_kafka_header_add

pub unsafe extern "C" fn rd_kafka_header_add(
    hdrs: *mut rd_kafka_headers_t, 
    name: *const c_char, 
    name_size: ssize_t, 
    value: *const c_void, 
    value_size: ssize_t
) -> rd_kafka_resp_err_t