schema.yml

sso_connect.connection.* :
  type: config_entity
  label: SSO connection
  mapping:
    name:
      type: label
      label: 'Name'
    id:
      type: string
      label: 'Machine name'
    url:
      type: string
      label: 'URL of the SSO Provider'
    consumerSettings:
      type: sequence
      label: 'Advanced storage for Consumer'
      sequence:
        type: mapping
        mapping:
          key:
            type: string
            label: The SSO Key
          secret:
            type: string
            label: The SSO Secret