Custom views field in drupal 8

HI,

I need to display in a view a php result.
I created a new field in my views.

I created a class (class _customViewsField extends FieldPluginBase )

In the render section, I need to know the name of the block, or the id.

I tried this->$view->current_display but it doesn’t works.

How could I get it?

Thanks

 

Drupal version: 


Source: https://www.drupal.org/taxonomy/term/4/feed