title: How to use @Singleton of Guice ?
body: <p>I need to make one instance of some class - and this one instance need to be accessible from any place in the code. </p>
  
  <p>So, I found the Guice... and i want to use the '@Singleton' from this package but i don't find any example or some doc to how to use it and how to make the declaration.  </p>