public Builder cacheNamespace(String cacheNamespace) {
            this.cacheNamespace = cacheNamespace;
            return this;
        }
Set an API-specific tag group of related cached parameters.

@param cacheNamespace Cache namespace to set.
@return Returns the builder.
smithy-aws-apigateway-traits/src/main/java/software/amazon/smithy/aws/apigateway/traits/IntegrationTrait.java