if(
  ri!readOnly,
  if(
    isusernametaken(ri!record.${fieldName}),
    a!linkField(
      label: "${displayName}",
      labelPosition: "ADJACENT",
      links: #"${userRecordLinkRuleUuid}"(ri!record.${fieldName}, #"${formatNameRuleUuid}"(ri!record.${fieldName}))
    ),
    a!textField(
      label: "${displayName}",
      labelPosition: "ADJACENT",
      readOnly: true,
      value: ri!record.${fieldName}
    )
  ),
  a!pickerFieldUsers(
    label: "${displayName}",
    labelPosition: "ABOVE",
    instructions: "${instructions}",
    helpTooltip: "${helpTooltip}",
    placeholder: "${placeholderText}",
    maxSelections: 1,
    required: ${requiredField},
    value: ri!record.${fieldName},
    saveInto: ri!record.${fieldName}
  )
)