MimeUtils constructor Null safety

1. baguette
2. MimeUtils
3. MimeUtils
4. MimeUtils constructor

MimeUtils class

1. Constructors
2. MimeUtils
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. noSuchMethod
8. toString
9. Operators
10. operator ==
11. Static methods
12. getType