private BlobInfo getBlobInfo(long blobSize) {
    return new BlobInfo(
        new BlobProperties(blobSize, TEST_SERVICE_ID, TEST_ACCOUNT_ID, TEST_CONTAINER_ID, DEFAULT_ENCRYPTED_FLAG), null,
        DEFAULT_LIFE_VERSION);
  }
@return BlobInfo with specified size and default metadata
@param blobSize blob size to use
ambry-frontend/src/test/java/com/github/ambry/frontend/SimpleAmbryCostModelPolicyTest.java