Retrieve the buffer associated with the given file.
\param tu the translation unit
\param file the file for which to retrieve the buffer.
\param size out if non-NULL, will be set to the size of the buffer.
\returns a pointer to the buffer in memory that holds the contents of \p file, or a NULL pointer when the file is not loaded.
See Implementation
Retrieve the buffer associated with the given file.
\param tu the translation unit
\param file the file for which to retrieve the buffer.
\param size out if non-NULL, will be set to the size of the buffer.
\returns a pointer to the buffer in memory that holds the contents of \p file, or a NULL pointer when the file is not loaded.