the metric dimensions as expressions, and allows you to
remove or override the existing metric dimensions. You can modify the standard
metric definitions using <code>tags_to_remove</code> or by re-defining a dimension. These
configuration settings are also exposed as istioctl installation options, which
allow you to customize different metrics for gateways and sidecars as well as
for the inbound or outbound direction.</p><p>For more information, see <a href=/v1.16/docs/reference/config/proxy_extensions/stat