The list of the most preferred mime types for fileName.
If its length is greater than 1 it means there are many mime type with same priority matching this fileName.
Array of names of the most preferred mime types for given fileName.
Note:
Implementer should prefer to return arrays with unique names.
Implementer is NOT expected to get the file data or state (e.g. read or stat it).
The list of the most preferred mime types for fileName. If its length is greater than 1 it means there are many mime type with same priority matching this fileName.