private Model getModel() {
        return Objects.requireNonNull(model.get(), "The dereferenced WeakReference<Model> is null");
    }
Returns true if a shape has any HTTP response trait bindings.

@param shape Shape to check.
@return Returns true if the shape is bound to an HTTP header,
 payload, of prefix headers.
smithy-model/src/main/java/software/amazon/smithy/model/knowledge/HttpBindingIndex.java