static MeterIdPrefixFunction ofDefault(String name) {
        return DefaultMeterIdPrefixFunction.of(name);
    }
Returns the default function that creates a {@link MeterIdPrefix} with the specified name and
the {@link Tag}s derived from the {@link RequestLog} properties.
<ul>
  <li>Server-side tags:<ul>
    <li>{@code hostnamePattern} - {@link VirtualHost#hostnamePattern()}
    <li>{@code service} - RPC service name or innermost service class name</li>
    <li>{@code method} - RPC method name or {@link HttpMethod#name()} if RPC method name is not
                         available</li>
    <li>{@code httpStatus} - {@link HttpStatus#code()}</li>
  </ul></li>
  <li>Client-side tags:<ul>
    <li>{@code method} - RPC method name or {@link HttpMethod#name()} if RPC method name is not
                         available</li>
    <li>{@code service} - RPC service name or innermost service class name</li>
    <li>{@code httpStatus} - {@link HttpStatus#code()}</li>
  </ul></li>
</ul>
core/src/main/java/com/linecorp/armeria/common/metric/MeterIdPrefixFunction.java