default Map<String, DescriptionInfo> loadDocStrings(Set<ServiceConfig> serviceConfigs) {
        return ImmutableMap.of();
    }
Loads the {@link DescriptionInfo} that describes services and their methods, enums and their values and
that describes services and their methods, enums and their values and
structs/exceptions and their fields. The {@link Map} returned by this method will contain the
documentation strings identified by the key strings that conforms to one of the following formats:
<ul>
  <li>{@code "{service name}"} - a docstring that describes a service</li>
  <li>{@code "{service name}/{method name}"} - a docstring that describes a service method</li>
  <li>{@code "{service name}/{method name}/{parameter name}"} - a docstring that describes
      a service method parameter</li>
  <li>{@code "{type name}"} - a docstring that describes an enum, a struct or an exception</li>
  <li>{@code "{type name}/{field name}"} - a docstring that describes a field of an enum, a struct or
      an exception</li>
</ul>
core/src/main/java/com/linecorp/armeria/server/docs/DocServicePlugin.java