What is the method for creating a new interface in idea?

One option for creating a new interface is to use the following methods:

1. Define a new interface using keywords or syntax in a programming language.
2. Create a new class and set it as an interface type.
3. Define the methods and attributes of the interface, as well as any other necessary constraints and specifications.
4. The class implementing an interface must implement all the methods and properties defined in the interface.
5. When an interface is needed, use a variable or parameter of the interface type to reference an instance of a class that implements the interface.
6. Call the interface method to perform the corresponding operation.