minor refactoring

Author: arcuri82

core/src/main/kotlin/org/evomaster/core/output/auth/TokenWriter.kt

@@ -54,8 +54,7 @@ object TokenWriter {
             if(k.token!!.headerPrefix.isNotEmpty()) {
                 lines.append("\"${k.token!!.headerPrefix}\"")
             }else{
-//                if (format.isJavaScript() || format.isPython())
-                    lines.append("\"\"")
+                lines.append("\"\"")
             }
 
             if (!format.isPython()) {
@@ -66,7 +65,6 @@ object TokenWriter {
                 }
             }
 
-
             when{
                 format.isJavaOrKotlin() -> lines.append("given()")
                 format.isJavaScript() -> {
@@ -97,10 +95,11 @@ object TokenWriter {
                 lines.indented { lines.add("error => {console.log(error.response.body); throw Error(\"Auth failed.\")});") }
             } else if (format.isPython()) {
                 lines.add("${tokenName(k)} = ${tokenName(k)} + ${responseName(k)}.json()$path")
-            }else if (format.isKotlin()) {
-                lines.add(".then().extract().response().path(\"$path\")!!")
-            }else {
+            }else if (format.isJavaOrKotlin()) {
                 lines.add(".then().extract().response().path(\"$path\")")
+                if(format.isKotlin()) {
+                    lines.append("!!")
+                }
             }
             lines.appendSemicolon()
             lines.addEmpty()