'Return the signature and name of the function to initialize the module.'

@property
def module_create_definition(self):

    signature = lc.Type.function(lt._pyobject_head_p, (lt._int8_star, self.method_def_ptr, lt._int8_star, lt._pyobject_head_p, lt._int32))
    name = 'Py_InitModule4'
    if lt._trace_refs_:
        name += 'TraceRefs'
    if (lt._plat_bits == 64):
        name += '_64'
    return (signature, name)
