public Builder addFolderNumbers(long value) {

        ensureFolderNumbersIsMutable();
        folderNumbers_.addLong(value);
        bitField0_ |= 0x00000001;
        onChanged();
        return this;
      }
<pre>
Optional. The list of folder numbers to include in the dataset.
</pre>

<code>repeated int64 folder_numbers = 1 [(.google.api.field_behavior) = OPTIONAL];</code>

@param value The folderNumbers to add.
@return This builder for chaining.
java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/DatasetConfig.java