code: void dissociate() {
  
          if (TraceComponent.isAnyTracingEnabled() && TRACE.isEntryEnabled()) {
              SibTr.entry(this, TRACE, "dissociate");
          }
  
          _managedConnection = null;
  
          if (TraceComponent.isAnyTracingEnabled() && TRACE.isEntryEnabled()) {
              SibTr.exit(this, TRACE, "dissociate");
          }
  
      }
docs: Dissociates this session from its current managed connection.