oss_src/fault/zmq/zmq_msg_vector.hpp
inline void pop_back() {
     if (!empty()) {
       msgs.pop_back();
     }
   }
/// removes an element from the back.
removes an element from the back.
removes an element from the back .
inline void pop_back() {
     if (!empty()) {
       msgs.pop_back();
     }
   }
inline void pop_back ( ) { if ( ! empty ( ) ) { msgs . pop_back ( ) ; } }
removes an element from the back.
removes an element from the back .