message: catalog: gather all mount points beneath EntityLayout Routes
diff: @@ -24,7 +24,14 @@ import React, {
  useState,
  } from 'react';
  import { Entity, ENTITY_DEFAULT_NAMESPACE } from '@backstage/catalog-model';
  -import { Content, Header, HeaderLabel, Page, Progress } from '@backstage/core';
  +import {
  + attachComponentData,
  + Content,
  + Header,
  + HeaderLabel,
  + Page,
  + Progress,
  +} from '@backstage/core';
  import { Box } from '@material-ui/core';
  import { Alert } from '@material-ui/lab';
  import { useNavigate } from 'react-router';
  @@ -43,6 +50,9 @@ type SubRoute = {
  const Route: (props: SubRoute) => null = () => null;
  +// This causes all mount points that are discovered within this route to use the path of the route itself
  +attachComponentData(Route, 'core.gatherMountPoints', true);
  +
  export function createSubRoutesFromChildren(children: ReactNode): SubRoute[] {
  return Children.toArray(children).flatMap(child => {
  if (!isValidElement(child)) {
  