--- (1) ---
Good, looped for 2 seconds

--- (2) ---
1 I am blocking event loop
2 I am blocking event loop
3 I am blocking event loop
4 I am blocking event loop
5 I am blocking event loop
6 I am blocking event loop
7 I am blocking event loop
8 I am blocking event loop
9 I am blocking event loop
10 I am blocking event loop

--- (3) ---
this is the start
this is just a message
this is the end
Ran after 2.001000165939331 seconds
Callback 1: this is a msg from call back
Callback 2: this is a msg from call back