Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

* fix: Allow custom http bindings for LROs

* fix: Update generator and GAX to support custom HTTP Bindings for operations

* fix: Use static Map for custom Operation  REST Http Bindings

* chore: Update golden test cases

* chore: Update showcase tests

* chore: Update golden ITs

* chore: Add back origin HttpJsonOperationStub.create() methods

* fix(deps): update dependency com.google.auth:google-auth-library-bom to v1.15.0 (#1278)

* doc: Update DEVELOPMENT.md for local development. (#1237)

* chore: Create a default mapping in OperationStub

* chore: Do not generate custom bindings if there are none

* chore: Update golden units

* chore: Update all test cases

* chore: Fix format issues

* fix: remove constant operation binding field

* chore: Clean up code

* chore: Resolve sonar comments

* chore: DEVELOPMENT.md formatting fix (#1289)

* ci: use java-shared-dependencies in google-cloud-java repository for downstream test (#1291)

* ci: use java-shared-dependencies in google-cloud-java

* No need to modify google-cloud-jar-parent

* fix(java): initialize netty-shaded at run-time and add reflection configurations for netty classes (#1290)

* fix(java): initialize netty-shaded at run-time and add reflection configurations for netty classes

* ci(showcase): disable rest_numeric_enum for showcase testing (#1284)

* ci(showcase): disable rest_numeric_enum feature in showcase tests

* chore(main): release 2.15.0 (#1269)

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

* chore(main): release 2.15.1-SNAPSHOT (#1292)

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

* chore: Pin Bazel version to 5.2.0 (#1304)

Pin Bazel version to 5.2.0 as googleapis already updated to 5.2.0

* build(deps): bump cryptography from 38.0.3 to 39.0.1 in /.kokoro (#1297)

Bumps [cryptography](https://github.com/pyca/cryptography) from 38.0.3 to 39.0.1.
- [Release notes](https://github.com/pyca/cryptography/releases)
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@38.0.3...39.0.1)

---
updated-dependencies:
- dependency-name: cryptography
  dependency-type: direct:production
...

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* chore: (cleanup) removing unused files (#1265)

* chore: (cleanup) removing unused files

* chore: working on comments

* chore: removing unused Gradle files in api-common-java, gax-java, java-common-protos, and java-iam (#1305)

The build is Maven or Bazel. The Gradle files in the recently migrated repositories (api-common-java, gax-java, java-common-protos, and java-iam) are not used.

Note that this pull request is not touching rules_java_gapic/resources/gradle which is still used to generate Gradle files for self-service client libraries.

* chore: updated gax-java contribution doc (#1334)

Removing unnecessary files

* fix: use pkg_tar from rules_pkg (#1303)

* chore: Fix pre-commit. (#1294)

* chore: update CONTRIBUTING.md (#1346)

* fix(deps): update dependency io.grpc:grpc-bom to v1.53.0 (#1345)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [io.grpc:grpc-bom](https://togithub.com/grpc/grpc-java) | `1.52.1` -> `1.53.0` | [![age](https://badges.renovateapi.com/packages/maven/io.grpc:grpc-bom/1.53.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/io.grpc:grpc-bom/1.53.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/io.grpc:grpc-bom/1.53.0/compatibility-slim/1.52.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/io.grpc:grpc-bom/1.53.0/confidence-slim/1.52.1)](https://docs.renovatebot.com/merge-confidence/) |

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### ⚠ Dependency Lookup Warnings ⚠

Warnings were logged while processing this repo. Please check the Dependency Dashboard for more information.

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### Release Notes

<details>
<summary>grpc/grpc-java</summary>

### [`v1.53.0`](https://togithub.com/grpc/grpc-java/releases/tag/v1.53.0)

[Compare Source](https://togithub.com/grpc/grpc-java/compare/v1.52.1...v1.53.0)

##### New Features

-   googleapis: Allow user set c2p bootstrap config ([#&#8203;9856](https://togithub.com/grpc/grpc-java/issues/9856))
-   xds: Add contain and stringMatcher in `RouteConfiguration` ([#&#8203;9845](https://togithub.com/grpc/grpc-java/issues/9845))
-   core: Add `grpc-previous-rpc-attempts` to the initial response metadata ([#&#8203;9686](https://togithub.com/grpc/grpc-java/issues/9686))
-   servlet: Implement gRPC server as a Servlet ([#&#8203;8596](https://togithub.com/grpc/grpc-java/issues/8596))
-   authz: Implement static authorization server interceptor ([#&#8203;8934](https://togithub.com/grpc/grpc-java/issues/8934))

##### Examples

-   servlet: Add servlet example ([#&#8203;8596](https://togithub.com/grpc/grpc-java/issues/8596))

##### Bug Fixes

-   xds: Update xds error handling logic.  Specifically:
    -   When the ads stream is closed only send errors to subscribers that haven't yet gotten results
    -   Timers to detect missing resources don’t start until the adsStream is ready ([#&#8203;9745](https://togithub.com/grpc/grpc-java/issues/9745))
    -   Call subscriber onError callback when xds client fails to connect to server ([#&#8203;9827](https://togithub.com/grpc/grpc-java/issues/9827))
-   core: Delay retriable stream master listener close until all sub streams are closed. This fixes the call executor lifecycle and prevents potential `RejectedExecutionException`. ([#&#8203;9754](https://togithub.com/grpc/grpc-java/issues/9754))
-   core: Free unused `MessageProducer` in `RetriableStream` ([#&#8203;9853](https://togithub.com/grpc/grpc-java/issues/9853)), fixing a Netty buffer memory leak for cancelled RPCs
-   api: Fail with `NullPointerException` when a Metadata.Marshaller returns null bytes ([#&#8203;9781](https://togithub.com/grpc/grpc-java/issues/9781)). This would previously cause a `NullPointerException` later during the RPC. Now the return value of the Marshaller is checked immediately, to help find the broken Marshaller

##### Behavior Changes

-   xds: Disallow duplicate addresses in the RingHashLB. ([#&#8203;9776](https://togithub.com/grpc/grpc-java/issues/9776))
-   xds: EDS weight sums are allowed up to max unsigned int (was max signed int) ([#&#8203;9765](https://togithub.com/grpc/grpc-java/issues/9765))
-   xds: Drop xds v2 support ([#&#8203;9760](https://togithub.com/grpc/grpc-java/issues/9760))

##### Dependencies

-   JUnit upgraded to 4.13.2
-   bazel: Dropped support for Bazel 4. We track the two most recent major versions of Bazel, Bazel 5 and 6. Bazel 4 may still work, but we are no longer testing it
-   bazel: Include Tomcat annotations dependency for `@Generated` as used by autovalue ([#&#8203;9762](https://togithub.com/grpc/grpc-java/issues/9762)). Necessary for building xds and rls on Java 9+
-   bazel: Export deps from Maven Central-specific stand-in targets ([#&#8203;9780](https://togithub.com/grpc/grpc-java/issues/9780)). Some Maven Central artifacts are a combination of multiple Bazel targets, like grpc-core is composed of //core:inprocess, //core:internal, //core:util, //api. There is a “//core:core_maven” target used by maven_install that uses the other targets. Previously the target used `runtime_deps` to discourage their use by Bazel users, but that could cause compilation failures from lack of hjars. These targets now use `exports`

##### Acknowledgement

[@&#8203;cpovirk](https://togithub.com/cpovirk)
[@&#8203;niloc132](https://togithub.com/niloc132)
[@&#8203;stephenh](https://togithub.com/stephenh)
[@&#8203;olderwei](https://togithub.com/olderwei)
[@&#8203;pandaapo](https://togithub.com/pandaapo)
[@&#8203;panxuefeng](https://togithub.com/panxuefeng)

</details>

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* chore(deps): update dependency org.apache.maven.plugins:maven-deploy-plugin to v3.1.0 (#1340)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [org.apache.maven.plugins:maven-deploy-plugin](https://maven.apache.org/plugins/) | `3.0.0` -> `3.1.0` | [![age](https://badges.renovateapi.com/packages/maven/org.apache.maven.plugins:maven-deploy-plugin/3.1.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/org.apache.maven.plugins:maven-deploy-plugin/3.1.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/org.apache.maven.plugins:maven-deploy-plugin/3.1.0/compatibility-slim/3.0.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/org.apache.maven.plugins:maven-deploy-plugin/3.1.0/confidence-slim/3.0.0)](https://docs.renovatebot.com/merge-confidence/) |

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* chore(deps): update dependency org.apache.maven.plugins:maven-surefire-plugin to v3.0.0-m9 (#1350)

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* chore: add rules_pkg to renovate bot ignoreDeps (#1349)

Following up on https://togithub.com/googleapis/gapic-generator-java/pull/1338, suppressing renovate PRs for the `rules_pkg` dependency since it will need to align with version used in googleapis.

* chore: fix renovate bot ignoreDeps (#1353)

Fixes #1352, from missed separator in #1349's changes.

* fix(batcher): exceptions in unaryCaller bubble up (#1166)

Co-authored-by: Blake Li <blakeli@google.com>

* fix(deps): update dependency com.google.auth:google-auth-library-bom to v1.16.0 (#1355)

* chore(deps): update dependency org.apache.maven.plugins:maven-javadoc-plugin to v3.5.0 (#1356)

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* chore(main): release 2.15.1 (#1339)

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Co-authored-by: Emily Wang <emmwang@google.com>

* chore: refactoring README and DEVELOPMENT.md (#1351)

Thank you for opening a Pull Request! For general contributing guidelines, please refer to [contributing guide](https://togithub.com/googleapis/gapic-generator-java/blob/main/CONTRIBUTING.md)


- The old file https://togithub.com/googleapis/gapic-generator-java/blob/main/gapic-generator-java/DEVELOPMENT.md was last touched in mid December. I'm replacing the content with the latest at the root.
- Removing the root DEVELOPMENT.md in favor of the file above.
- Adding index of the modules at the root README.md
- Moving showcase testing guide to showcase/README.md.

* chore(main): release 2.15.2-SNAPSHOT (#1358)

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* chore: renovate to group Protobuf artifacts (#1362)

Copying packageGroup configuration from https://togithub.com/googleapis/synthtool/blob/master/synthtool/gcp/templates/java_library/renovate.json

This should avoid separate pull requests for Protobuf: https://togithub.com/googleapis/gapic-generator-java/pull/1155 and https://togithub.com/googleapis/gapic-generator-java/pull/1154

* chore: README.md to explain service_config.proto (#1361)

* chore: README.md to explain service_config.proto

* add link

* chore: Telling owlbot to ignore these files & it's a monorepo (#1372)

* chore: Telling owlbot to ignore these files & it's a monorepo

* fix: Change the default scope of gax from implementation to api in auto-generated gradle files for self-service client libraries. (#1374)

* chore: Update variable name

* chore: Fix format issues

* fix: Use HttpRule as Value for Custom Bindings

* fix: Use HttpRule as Value for Custom Bindings

* chore: Add comments

* chore: Update tests

* fix(deps): update dependency com.google.auth:google-auth-library-bom to v1.15.0 (#1278)

* doc: Update DEVELOPMENT.md for local development. (#1237)

* chore: Add tests

* chore: Cleanup files

* chore: Format the files

* chore: Add NoCredentialsProvider

* chore: Fix sonar comments

* chore: Add serviceyaml file for parsing for rest showcase tests

* chore: Use service yaml file in test

* chore: Fix Echo showcase test

* chore: Clean up tests

* chore: Sort the map entry to get a consistent ordering for the test

* chore: Update showcase and integration tests

* chore: Resolve sonar comments

* chore: Update comments

* chore: Remove a few public constructors

* chore: test ci

* chore: Remove the cache for java 8

* chore: Update from PR feedback

* chore: Update comments

* chore: Fix sonar issue

* chore: Fix comment

* chore: Update to have multiple additional_bindings

* chore: Update grpcrest golden test to include httprule

* chore: HttpJsonOperationsStub's MethodDescriptors are not static

* chore: Add unit tests for HttpJson Operations logic

* chore: Resolve lint issues

* chore: Clean up test code

* chore: Resolve pr comments

* chore: Add VisibleForTesting annotation

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