private static void clearCrumbInThread(Thread t) {
    String name = t.getName();
    int i = name.indexOf(CommonBreadcrumbStart);
    if (i >= 0) {
      t.setName(name.substring(0, i));
    }
  }
This method does all of the work of setting/clearing individual breadcrumbs in thread names

@param t the thread to modify
@param type the type of breadcrumb
@param crumb the crumb to insert, or null to clear
geode-core/src/main/java/org/apache/geode/internal/util/Breadcrumbs.java