public Builder error(ShapeId error) {
            this.error = error;
            return this;
        }
Set the error shape which indicates to a client that an endpoint
they are using is no longer valid.

<p>This error MUST be bound to every operation bound to the service
which is marked with an {@link ClientDiscoveredEndpointTrait}.</p>

@param error The ShapeId of the invalid endpoint error.
@return Returns the builder.
smithy-aws-traits/src/main/java/software/amazon/smithy/aws/traits/clientendpointdiscovery/ClientEndpointDiscoveryTrait.java