public ContainerBuilder setUserMetadataKeysToNotPrefixInResponse(Set<String> userMetadataKeys) {
    this.userMetadataKeysToNotPrefixInResponse = userMetadataKeys;
    return this;
  }
Sets the set of user metadata keys to not prefix in response of the {@link Container} to build.
@param userMetadataKeys The value to set
@return This builder.
ambry-api/src/main/java/com/github/ambry/account/ContainerBuilder.java