Send data to channel id . For a job, it writes it to the stdin of the process. For the stdio channel |channel-stdio|, it writes to Nvim's stdout. For an internal terminal instance (|nvim_open_term()|) it writes directly to terimal output. See |channel-bytes| for more information. This function writes raw data, not RPC messages. If the channel was created with rpc=true then the channel expects RPC messages, use |vim.rpcnotify()| and |vim.rpcrequest()| instead. Parameters: ~ {chan} id of the channel {data} data to write. 8-bit clean: can contain NUL bytes.