code: String lookupPid(ConfigID referenceId) {
          ExtendedConfiguration config = caSupport.lookupConfiguration(referenceId);
          String pid = (config == null) ? null : config.getPid();
          if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) {
              Tr.debug(tc, "lookupPid(): Lookup of " + referenceId + " reference resolved to " + pid);
          }
          return pid;
      }
docs: Find a configuration PID from a configuration ID.
  
  @param referenceId the ID to lookup
  @return the configuration PID, or null if no configuration is found