OGMedia constructor Null safety

1. sendbird_sdk
2. og_interfaces
3. OGMedia
4. OGMedia constructor

OGMedia class

1. Constructors
2. OGMedia
3. Properties
4. hashCode
5. runtimeType
6. secureUrl
7. url
8. Methods
9. noSuchMethod
10. toString
11. Operators
12. operator ==