Issue #3170138 by jhaskins, mallezie, basvredeling: Attempting to add a...

              '@bundle_label' => $bundle_label,

            ]);

            $plugin_id = "$entity_type_id:$field_name:$delta:$bundle";

            $context_definition = EntityContextDefinition::fromEntityTypeId($entity_type_id);

            $context_definition->addConstraint('Bundle', [$bundle]);

            $this->derivatives[$plugin_id] = [

              'context_definitions' => [

                'entity' => EntityContextDefinition::fromEntityTypeId($entity_type_id),

                'entity' => $context_definition,

                'view_mode' => new ContextDefinition('string'),

              ],

              'admin_label' => $admin_label,

            ] + $base_plugin_definition;