code: public org.inferred.freebuilder.processor.property.Property.Builder addAccessorAnnotations(
        Excerpt element) {
      if (accessorAnnotations instanceof ImmutableList) {
        accessorAnnotations = new ArrayList<>(accessorAnnotations);
      }
      accessorAnnotations.add(Objects.requireNonNull(element));
      return (org.inferred.freebuilder.processor.property.Property.Builder) this;
    }
docs: Adds {@code element} to the list to be returned from {@link
  org.inferred.freebuilder.processor.property.Property#getAccessorAnnotations()}.
  
  @return this {@code Builder} object
  @throws NullPointerException if {@code element} is null