public Set<String> getCoprocessors() {
    Set<String> returnValue = new TreeSet<>();
    for (E e : coprocEnvironments) {
      returnValue.add(e.getInstance().getClass().getSimpleName());
    }
    return returnValue;
  }
Used to create a parameter to the HServerLoad constructor so that HServerLoad can provide
information about the coprocessors loaded by this regionserver. (HBASE-4070: Improve region
server metrics to report loaded coprocessors to master).
hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/CoprocessorHost.java