Chris@0: entity_reference_selection.{{ plugin_id }}:
Chris@0: {# User selection plugin provides has some additional options. #}
Chris@4:   type: entity_reference_selection.default{{ entity_type == 'user' ? ':user' }}
Chris@0:   label: '{{ plugin_label }} handler settings'
Chris@4: {% if configurable %}
Chris@0:   mapping:
Chris@0:     foo:
Chris@0:       type: string
Chris@0:       label: Foo
Chris@0: {% endif %}