proc ca* (T: typedesc, fbb: ptr FlatBufferBuilder, len: int): Array[T] {.noinit.} =
    result.len = len
    result.data = cast[ptr uarray[T]](fbb.create_array(len.csize, sizeof(T), result.o))

let boolarray = fbb.ca[bool](2)
boolarray[0] = true
boolarray[1] = true