UnsplashImagesApi constructor Null safety

1. mc_gallery
2. unsplash_images_api
3. UnsplashImagesApi
4. UnsplashImagesApi constructor

UnsplashImagesApi class

1. Constructors
2. UnsplashImagesApi
3. Properties
4. hashCode
5. random
6. runtimeType
7. Methods
8. fetchImageUri
9. noSuchMethod
10. searchImages
11. toString
12. Operators
13. operator ==
14. Static properties
15. locate