Trouble sending a message with an argument of type "aay"

[yurac]

Is sending array of arrays of bytes supported?

I get this:
File "/cyc_bsc/scripts/stfs/avahi_wrapper.py", line 69, in start
await self.group.AddService(avahi.IF_UNSPEC, avahi.PROTO_UNSPEC, 0, self.name, self.type, self.domain, self.host, self.port, self.text)
File "/usr/lib/python3.6/site-packages/ravel.py", line 2839, in call_method
_append_args(message, intr_method, args, kwargs)
File "/usr/lib/python3.6/site-packages/ravel.py", line 2776, in _append_args
message.append_objects(call_info.in_signature, *message_args)
File "/usr/lib/python3.6/site-packages/dbussy.py", line 4451, in append_objects
append_sub(parse_signature(signature), args, self.iter_init_append())
File "/usr/lib/python3.6/site-packages/dbussy.py", line 4415, in append_sub
if type_is_fixed_array_elttype(arrelttype.code.value) :
AttributeError: 'ArrayType' object has no attribute 'code'

Where I try to call avahi AddService message with the following signature:

    <method name="AddService">                                                                                          
      <arg name="interface" type="i" direction="in"/>                                                                   
      <arg name="protocol" type="i" direction="in"/>                                                                    
      <arg name="flags" type="u" direction="in"/>                                                                       
      <arg name="name" type="s" direction="in"/>                                                                        
      <arg name="type" type="s" direction="in"/>                                                                        
      <arg name="domain" type="s" direction="in"/>                                                                      
      <arg name="host" type="s" direction="in"/>                                                                        
      <arg name="port" type="q" direction="in"/>                                                                        
      <arg name="txt" type="aay" direction="in"/>                                                                       
    </method>

Seems that the problem is with the last argument.
I tried passing various values to it but nothing works.
Any idea?

[ldo]

Looks like a duplicate of #46, previously fixed.

[yurac]

Thanks @ldo, I updated to the version from git and it works now