code: public ResourceListKeysInner regenerateKeys(String resourceGroupName, String namespaceName, String authorizationRuleName) {
          return regenerateKeysWithServiceResponseAsync(resourceGroupName, namespaceName, authorizationRuleName).toBlocking().single().body();
      }
docs: Regenerates the Primary/Secondary Keys to the Namespace Authorization Rule.
  
  @param resourceGroupName The name of the resource group.
  @param namespaceName The namespace name.
  @param authorizationRuleName The connection string of the namespace for the specified authorizationRule.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws CloudException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
  @return the ResourceListKeysInner object if successful.