hunk.code_window:           const value = x instanceof Observable ? this.materializeInnerObservable(x, this.frame) : x;
             actual.push({ frame: this.frame, notification: nextNotification(value) });
           },
           (error) => {
             actual.push({ frame: this.frame, notification: errorNotification(error) });
           },
  
hunk.labels: keep keep keep replace keep keep
hunk.after_edit:         error: (error) => {
  
hunk.file_path: src/internal/testing/TestScheduler.ts
hunk.type: replace
file: {% import "lib/memberHelpers.html" as memberHelper -%}
  
  <section class="{$ doc.docType $}-overview">
  <code-example language="ts" hideCopy="true">
  {% if doc.isAbstract %}abstract {% endif%}{$ doc.docType $} {$ doc.name $}{$ doc.typeParams | escape $}{$ memberHelper.renderHeritage(doc) $} {{$ memberHelper.renderMembers(doc) $}
  }
  </code-example>
  {$ descendants.renderDescendants(doc, 'class', 'Subclasses') $}
  </section>
  