Function FLEncoder_FinishDoc 

pub unsafe extern "C" fn FLEncoder_FinishDoc(
    arg1: FLEncoder,
    outError: *mut FLError,
) -> FLDoc

Ends encoding; if there has been no error, it returns the encoded Fleece data packaged in an FLDoc. (This function does not support JSON encoding.) This does not free the FLEncoder; call FLEncoder_Free (or FLEncoder_Reset) next.