public final synchronized EditorActionHandler setupHandler(@NotNull EditorActionHandler newHandler) {
    if (HANDLER_LOG.isDebugEnabled()) {
      HANDLER_LOG.debug("Setup EditorActionHandler for " + this.getClass() + " with " + newHandler,
                        HANDLER_LOG.isTraceEnabled() ? new Throwable() : null);
    }

    EditorActionHandler tmp = getHandler();
    doSetupHandler(newHandler);
    return tmp;
  }
public final synchronized EditorActionHandler setupHandler(@NotNull EditorActionHandler newHandler)