Using Echo in separate class

Hello,

I have the Main method and I want to call another class. Inside the separate class (being a full script with it's own methods and class variables), I want to use Echo to display an output to the console.

I'm getting an error that 'Echo' isn't referenced / available in the separate class (called from main). I'm referencing the separate class as ??? xclass = new ???();

Is there a way to use Echo in another class and if so, how do I do it?

Thanks