docs: public void setReadOnly(WSRdbManagedConnectionImpl managedConn, boolean readOnly, boolean externalCall)
                      throws SQLException {
          if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled())
              Tr.debug(this, tc, "setReadOnly", managedConn, readOnly, externalCall);
          managedConn.setReadOnly(readOnly);
      }