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Allows the simple creation of descriptors that contain read-only literal text.
Literal descriptors are not strictly part of the Descriptors API,
as they are not derived from the descriptor type base class
TDesC
. However, they have conversion operators so that
they can be passed to any functions which take const TDesC&
or const TRefByValue<const TDesC>
parameters.
The API has two key concepts: literal descriptor, and literal descriptor constructor macro.
The literal descriptor stores literal text and provides operators to convert the text into a standard descriptor.