Do not use the DownsamplingConfig directly in the DLM downsampling round configuration

Author: gmarouli

specification/indices/_types/DownsamplingRound.ts

@@ -17,16 +17,15 @@
  * under the License.
  */
 
-import { Duration } from '@_types/Time'
-import { DownsampleConfig } from '@indices/_types/Downsample'
+import { Duration, DurationLarge } from '@_types/Time'
 
 export class DownsamplingRound {
   /**
    * The duration since rollover when this downsampling round should execute
    */
   after: Duration
   /**
-   * The downsample configuration to execute.
+   * The downsample interval.
    */
-  config: DownsampleConfig
+  fixed_interval: DurationLarge
 }