This property returns a string which specifies the MIME content
type for the current storage object. The content type is typically determined by the
object label and evaluating the contents of the object. It is also
possible for the application to explicitly specify the content type of
the object when it is created.
The object content type will always be in the format type/subtype
where the type specifies a common media type (e.g.: text, audio, video, etc.)
and subtype specifies the specific content. The most common content type for
text files is text/plain. If the content type is unknown, the
default content type is application/octet-stream.
Text objects may also optionally include the character encoding as
part of the content type. For example, if an object contains UTF-8
encoded text, the content type may be returned as text/plain;
charset=utf-8. If your application is parsing the content
types, you must check if a character encoding was also included in the
value. Text objects that do not specify an encoding either
contain ASCII or text which uses the system code page.
Unicode text will always be stored using UTF-8 encoding.