\brief Find references of a declaration in a specific file.
\param cursor pointing to a declaration or a reference of one.
\param file to search for references.
\param visitor callback that will receive pairs of CXCursor/CXSourceRange for
each reference found.
The CXSourceRange will point inside the file; if the reference is inside
a macro (and not a macro argument) the CXSourceRange will be invalid.
\brief Find references of a declaration in a specific file.
\param cursor pointing to a declaration or a reference of one.
\param file to search for references.
\param visitor callback that will receive pairs of CXCursor/CXSourceRange for each reference found. The CXSourceRange will point inside the file; if the reference is inside a macro (and not a macro argument) the CXSourceRange will be invalid.
\returns one of the CXResult enumerators.