protoc-gen-openapi: http pattern key mismatch

[acynothia]

I was try following https://google.aip.dev/133 guidance

// Copyright 2019 Google LLC.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

syntax = "proto3";

package google.example.library.v1;

import "google/api/annotations.proto";
import "google/api/client.proto";
import "google/api/field_behavior.proto";
import "google/api/resource.proto";

option go_package = "google.golang.org/genproto/googleapis/example/library/v1;library";
service LibraryService {
  option (google.api.default_host) = "library-example.googleapis.com";

  // Creates a book, and returns the new Book.
  rpc CreateBook(CreateBookRequest) returns (Book) {
    option (google.api.http) = {
      post: "/v1/{parent=shelves/*}/books"
      body: "book"
    };
    option (google.api.method_signature) = "parent,book";
  }
}

// Request message for LibraryService.CreateBook.
message CreateBookRequest {
  // The name of the shelf in which the book is created.
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference).child_type = "Book"
  ];

  // The book to create.
  Book book = 2 [(google.api.field_behavior) = REQUIRED];
}

// A single book in the library.
message Book {
  option (google.api.resource) = {
    type: "library-example.googleapis.com/Book",
    pattern: "shelves/{shelf_id}/books/{book_id}"
  };
  // The resource name of the book.
  // Book names have the form `shelves/{shelf_id}/books/{book_id}`.
  // The name is ignored when creating a book.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference).type = "library-example.googleapis.com/Book"
  ];

  // The name of the book author.
  string author = 2;

  // The title of the book.
  string title = 3;
}

after generate

paths:
    /v1/shelves/{shelf}/books:
        post:
            tags:
                - LibraryService
            description: Creates a book, and returns the new Book.
            operationId: LibraryService_CreateBook
            parameters:
                - name: shelf
                  in: path
                  description: The shelf id.
                  required: true
                  schema:
                    type: string
            requestBody:
                content:
                    application/json:
                        schema:
                            $ref: '#/components/schemas/Book'
                required: true

expected

             description: Creates a book, and returns the new Book.
             operationId: LibraryService_CreateBook
             parameters:
-                - name: shelf
+                - name: parent
                   in: path
-                  description: The shelf id.
+                  description: The name of the shelf in which the book is created.
                   required: true
                   schema:
                     type: string