How I can access GetProcessDeltaTime from a custom C# struct/class

Vale-git

Hi I have to get the delta value from a custom struct. I have no problem to use GetProcessDeltaTime from a class that inherit Node. But how if I have a normal struct or class? Edit:. I'm not talking about to pass delta as parameter. I'm doing in this way already. Thank you

Vale-git

Its a silly question :)