Classes
                    Base class for exceptions thrown in combination with event type headers
                
            
                    Event type is not valid
                
            
                    Event type wasnt sent via header
                
            
                    Specification for header processing classes
                
            
                    Representation for secret token
                
            
                    Secret token is not valid
                
            
                    Secret token missing
                
            
                    Base class for exceptions thrown in combination with secure tokens