Do not call overridable methods in constructors

When a virtual method is called, the actual type that executes the method is not selected until runtime. When a constructor calls a virtual method, it's possible that the constructor for the instance that invokes the method has not executed. This could lead to errors or unexpected behavior, if an overridden virtual method relies on initialization and other configuration in the constructor.

The constructor of an unsealed type calls a virtual method defined in its class.

To fix a violation of this rule, do not call a type's virtual methods from within the type's constructors.

Do not suppress a warning from this rule. The constructor should be redesigned to eliminate the call to the virtual method.