Provoke testbench fail to ensure the CI notices errors

src/tcl.rs

@@ -32,3 +32,11 @@ pub fn commands(tcl: &str) -> Vec<String> {
 
     return commands;
 }
+
+// @name words
+// @return Vec<String>
+// @brief Split command into words.
+// @param command: &str
+pub fn words(command: &str) -> Vec<String> {
+    vec![]
+}