Looks up a list of metric class identifiers in the metrics name space.

#include <dci.h>

DCIHandle       handle;
DCIClassId     *classIdList;
uint32          numIds;
DCIReturn     **bufferAddress;
uint32          bufferSize;
DCIStatus       ulrc;           /*  Return code. */

ulrc = dciListClassId(handle, classIdList,
         numIds, bufferAddress, bufferSize);