code: func OptFieldTypeTime(quantum TimeQuantum, opts ...bool) FieldOption {
  	return func(options *FieldOptions) {
  		options.fieldType = FieldTypeTime
  		options.timeQuantum = quantum
  		if len(opts) > 0 && opts[0] {
  			options.noStandardView = true
  		}
  	}
  }
docs: // OptFieldTypeTime adds a time field.