A destination location for feature values and format.
destinationUnion type
                  
                destination can be only one of the following:Output in BigQuery format. BigQueryDestination.output_uri in FeatureValueDestination.bigquery_destination must refer to a table.
Output in TFRecord format.
Below are the mapping from feature value type in Featurestore to feature value type in TFRecord:
value type in Featurestore                 | value type in TFRecord
DOUBLE, DOUBLE_ARRAY                       | FLOAT_LIST
INT64, INT64_ARRAY                         | INT64_LIST
STRING, STRING_ARRAY, BYTES                | BYTES_LIST
true -> byte_string("true"), false -> byte_string("false")
BOOL, BOOL_ARRAY (true, false)             | BYTES_LIST
Output in CSV format. Array feature value types are not allowed in CSV format.
| JSON representation | 
|---|
| { // destination "bigqueryDestination": { object ( | 
TFRecordDestination
The storage details for TFRecord output content.
Required. Google Cloud Storage location.
| JSON representation | 
|---|
| {
  "gcsDestination": {
    object ( | 
CsvDestination
The storage details for CSV output content.
Required. Google Cloud Storage location.
| JSON representation | 
|---|
| {
  "gcsDestination": {
    object ( |