code: protected void injectMethodTimer() {
          methodEntertime = newLocal(Type.LONG_TYPE);
          invokeStatic(Type.getType(System.class), Method.getMethod(CURRENT_TIME_MILLIS_METHODNAME));
          storeLocal(methodEntertime);
  
          /*
           * Inject debug information
           */
          if (Agent.debug) {
              getStatic(Type.getType(System.class), "err", Type.getType(PrintStream.class));
              push("Javametrics: Calling instrumented method: " + className + "." + methodName);
              invokeVirtual(Type.getType(PrintStream.class), Method.getMethod("void println(java.lang.String)"));
          }
      }
docs: Inject a local variable containing timestamp at method entry