There's no need to create a StringBuilder here.

Author: nirvdrum

java/server/src/org/openqa/selenium/server/commands/CaptureNetworkTrafficCommand.java

@@ -199,11 +199,7 @@ private String xml(String s) {
  }
 
  private String jsonKey(final String key) {
- final StringBuilder ret = new StringBuilder();
-
- ret.append(" \"").append(key).append("\"").append(":");
-
- return ret.toString();
+ return " \"" + key + "\"" + ":";
  }
 
  private Object json(String s) {