Add transform to get a field value from two different paths

[LalitLab]

There are few AWS resources in which the output of GET and LIST API calls differ (The type of struct differs for them).

Can we have a transform through which we can mention 2 paths to get the value ("Path1", "Path2")
If the value is not found in Path1 the transform should try to retrieve it from Path2

For example in aws_dynamodb_backup table

{
	Name:        "backup_status",
	Description: "Current status of the backup. Backup can be in one of the following states: CREATING, ACTIVE, DELETED",
	Type:        proto.ColumnType_STRING,
	Transform:   transform.GetValue("BackupStatus", "BackupDetails.BackupStatus,"),
}

LIST CALL STRUCT BackupSummary

// Contains details for the backup.
type BackupSummary struct {
	_ struct{} `type:"structure"`
	BackupArn *string `min:"37" type:"string"`
	BackupCreationDateTime *time.Time `type:"timestamp"`
	BackupExpiryDateTime *time.Time `type:"timestamp"`
	BackupName *string `min:"3" type:"string"`
	BackupSizeBytes *int64 `type:"long"`
	BackupStatus *string `type:"string" enum:"BackupStatus"`
	BackupType *string `type:"string" enum:"BackupType"`
	TableArn *string `type:"string"`
	TableId *string `type:"string"`
	TableName *string `min:"3" type:"string"`
}

GET CALL STRUCT BackupDescription

type BackupDescription struct {
	_ struct{} `type:"structure"`

	// Contains the details of the backup created for the table.
	BackupDetails *BackupDetails `type:"structure"`

	// Contains the details of the table when the backup was created.
	SourceTableDetails *SourceTableDetails `type:"structure"`

	// Contains the details of the features enabled on the table when the backup
	// was created. For example, LSIs, GSIs, streams, TTL.
	SourceTableFeatureDetails *SourceTableFeatureDetails `type:"structure"`
}

// Contains the details of the backup created for the table.
type BackupDetails struct {
	_ struct{} `type:"structure"`
	BackupArn *string `min:"37" type:"string" required:"true"`
	BackupCreationDateTime *time.Time `type:"timestamp" required:"true"`
	BackupExpiryDateTime *time.Time `type:"timestamp"`
	BackupName *string `min:"3" type:"string" required:"true"`
	BackupSizeBytes *int64 `type:"long"`
	BackupStatus *string `type:"string" required:"true" enum:"BackupStatus"`
	BackupType *string `type:"string" required:"true" enum:"BackupType"`
}

// Contains the details of the table when the backup was created.
type SourceTableDetails struct {
	_ struct{} `type:"structure"`
	BillingMode *string `type:"string" enum:"BillingMode"`
	ItemCount *int64 `type:"long"`
	KeySchema []*KeySchemaElement `min:"1" type:"list" required:"true"`
	ProvisionedThroughput *ProvisionedThroughput `type:"structure" required:"true"`
	TableArn *string `type:"string"`
	TableCreationDateTime *time.Time `type:"timestamp" required:"true"`
	TableId *string `type:"string" required:"true"`
	TableName *string `min:"3" type:"string" required:"true"`
	TableSizeBytes *int64 `type:"long"`
}