field_label-8.x-1.0/config/schema/field_label.schema.yml

field_label.settings:
  type: config_object
  mapping:
    label_tag_enabled:
      type: boolean
      label: 'Enable label tag selection'
    label_class_enabled:
      type: boolean
      label: 'Enable free-form label classes'
    label_class_select_enabled:
      type: boolean
      label: 'Enable label class select list'
    label_value_enabled:
      type: boolean
      label: 'Enable label value update'
    plural_label_enabled:
      type: boolean
      label: 'Enable plural label'
    allowed_tags:
      type: sequence
      label: 'Allowed label tags'
      sequence:
        type: string
        label: 'HTML tag'
    class_list:
      type: string
      label: 'Class list'
    label_class:
      type: string
      label: 'Label classes'
    label_value:
      type: label
      label: 'Label value'

field.formatter.third_party.field_label:
  type: mapping
  label: 'Field Label Formatter entity display settings'
  mapping:
    label_class:
      type: string
      label: 'Extra classes for the wrapper element'
    label_class_select:
      type: string
      label: 'Class selection for the wrapper element'
    label_value:
      type: label
      label: 'New value for the label'
    plural_label:
      type: label
      label: 'Plural label variation for multiple cardinality field'
    label_tag:
      type: string
      label: 'Custom label wrapper tag'