public ServiceFuture<SharedAccessAuthorizationRuleListResultInner> listKeysAsync(String resourceGroupName, String namespaceName, String authorizationRuleName, final ServiceCallback<SharedAccessAuthorizationRuleListResultInner> serviceCallback) {
        return ServiceFuture.fromResponse(listKeysWithServiceResponseAsync(resourceGroupName, namespaceName, authorizationRuleName), serviceCallback);
    }
public ServiceFuture < SharedAccessAuthorizationRuleListResultInner > listKeysAsync ( String resourceGroupName , String namespaceName , String authorizationRuleName , final ServiceCallback < SharedAccessAuthorizationRuleListResultInner > serviceCallback ) { return ServiceFuture . fromResponse ( listKeysWithServiceResponseAsync ( resourceGroupName , namespaceName , authorizationRuleName ) , serviceCallback ) ; }
Gets the Primary and Secondary ConnectionStrings to the namespace.

@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.
@param serviceCallback the async ServiceCallback to handle successful and failed responses.
@throws IllegalArgumentException thrown if parameters fail the validation
@return the {@link ServiceFuture} object