Added isolang as a message field.

src/document.rs

@@ -11,6 +11,27 @@ use std::{
 
 const RESPONDS_TO: [MsgType; 1] = [MsgType::DocumentRequest];
 
+struct Table;
+
+impl Table {
+    fn new() -> Self {
+        Self {}
+    }
+
+    fn add_column(&self) {}
+}
+
+#[cfg(test)]
+mod tables {
+    use super::*;
+
+    #[test]
+    fn create_table() {
+        let tbl = Table::new();
+        tbl.add_column();
+    }
+}
+
 pub struct Document {
     data: HashMap<String, String>,
     queue: Queue,