protected JSONArray getDisks() throws JSONException {
      return getJsonArrayDisks(diskCount, baseMountPath, HardwareState.AVAILABLE, diskCapacityInBytes);
    }
@param rangeStart start of the range of partitions.
@param count the number of partitions in the range.
@param expectedClass the expected class of all of the partitions
@param expectedState the expected state of all of the partitions
ambry-clustermap/src/test/java/com/github/ambry/clustermap/TestUtils.java