@Override
  @RequiresEdt
  protected void installOperations() {
    if (myViewer.isExternalOperationInProgress()) return;

    ContainerUtil.addIfNotNull(myOperations, createResolveOperation());
    ContainerUtil.addIfNotNull(myOperations, createAcceptOperation(Side.LEFT, OperationType.APPLY));
    ContainerUtil.addIfNotNull(myOperations, createAcceptOperation(Side.LEFT, OperationType.IGNORE));
    ContainerUtil.addIfNotNull(myOperations, createAcceptOperation(Side.RIGHT, OperationType.APPLY));
    ContainerUtil.addIfNotNull(myOperations, createAcceptOperation(Side.RIGHT, OperationType.IGNORE));
    ContainerUtil.addIfNotNull(myOperations, createResetOperation());
  }
@Override
  @RequiresEdt
  protected void installOperations()