Have to throw out that disclosure ð. While there are a number of essential oils you can use for minor migraines and head pain, two of the top single oils are Peppermint and Lavender. Peppermint is effective for helping to relieve minor symptoms of those mind-numbing headaches that come from a variety of culprits.
An abstract class is like a class, but differs in that it only defines generic methods in the class, but does not actually implement them. Those methods will be implemented later by specialized sub-classes. This is how we get interfaces - interfaces are the implementation of the abstract class.
In that way, an interface in C# is similar to an abstract class in which all the methods are abstract. However, a class or struct can implement multiple interfaces, but a class can inherit only a single class, abstract or not. Therefore, by using interfaces, you can include behavior from multiple sources in a class.