feat(generator): add JSpecify nullable annotations

Author: nnicolee

.github/workflows/showcase.yaml

@@ -115,46 +115,13 @@ jobs:
         env:
           BUILD_SUBDIR: sdk-platform-java
           JOB_TYPE: install
-      - uses: actions/setup-go@v5
-        with:
-          go-version: 'stable'
-      - name: Install protoc
-        run: |
-          set -e
-          VERSION="33.2"
-          curl -fsSL --retry 5 --retry-delay 15 -o /tmp/protoc.zip "https://github.com/protocolbuffers/protobuf/releases/download/v$VERSION/protoc-$VERSION-linux-x86_64.zip"
-          cd /usr/local
-          sudo unzip -o /tmp/protoc.zip
-          protoc --version
-      - uses: actions/setup-python@v5
-        with:
-          python-version: "3.12"
-          cache: 'pip'
-      - name: Install Librarian and tools
-        env:
-          PYTHONPATH: ${{ github.workspace }}/sdk-platform-java/hermetic_build/library_generation/owlbot
-        run: |
-          V=$(go run github.com/googleapis/librarian/cmd/librarian@latest config get version)
-          echo "Installing librarian version $V"
-          go install github.com/googleapis/librarian/cmd/librarian@$V
-          librarian install
-      - name: Setup Java 17 for Golden Tests
-        uses: actions/setup-java@v4
-        with:
-          java-version: 17
-          distribution: temurin
       - name: Showcase golden tests
         working-directory: java-showcase
         run: |
           mvn test \
             -P enable-golden-tests \
             --batch-mode \
             --no-transfer-progress
-      - name: Restore Matrix Java
-        uses: actions/setup-java@v4
-        with:
-          java-version: ${{ matrix.java }}
-          distribution: temurin
       - name: Parse showcase version
         working-directory: java-showcase/gapic-showcase
         run: echo "SHOWCASE_VERSION=$(mvn help:evaluate -Dexpression=gapic-showcase.version -q -DforceStdout)" >> "$GITHUB_ENV"

java-accessapproval/proto-google-cloud-accessapproval-v1/pom.xml

@@ -13,6 +13,10 @@
     <version>2.95.0-SNAPSHOT</version><!-- {x-version-update:google-cloud-accessapproval:current} -->
   </parent>
   <dependencies>
+    <dependency>
+      <groupId>org.jspecify</groupId>
+      <artifactId>jspecify</artifactId>
+    </dependency>
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>

java-accesscontextmanager/proto-google-identity-accesscontextmanager-type/pom.xml

@@ -13,6 +13,10 @@
     <version>1.95.0-SNAPSHOT</version><!-- {x-version-update:proto-google-identity-accesscontextmanager-v1:current} -->
   </parent>
   <dependencies>
+    <dependency>
+      <groupId>org.jspecify</groupId>
+      <artifactId>jspecify</artifactId>
+    </dependency>
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>

java-accesscontextmanager/proto-google-identity-accesscontextmanager-v1/pom.xml

@@ -13,6 +13,10 @@
     <version>1.95.0-SNAPSHOT</version><!-- {x-version-update:proto-google-identity-accesscontextmanager-v1:current} -->
   </parent>
   <dependencies>
+    <dependency>
+      <groupId>org.jspecify</groupId>
+      <artifactId>jspecify</artifactId>
+    </dependency>
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>

java-admanager/proto-ad-manager-v1/pom.xml

@@ -13,6 +13,10 @@
     <version>0.53.0-SNAPSHOT</version><!-- {x-version-update:ad-manager:current} -->
   </parent>
   <dependencies>
+    <dependency>
+      <groupId>org.jspecify</groupId>
+      <artifactId>jspecify</artifactId>
+    </dependency>
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>

java-advisorynotifications/proto-google-cloud-advisorynotifications-v1/pom.xml

@@ -13,6 +13,10 @@
     <version>0.83.0-SNAPSHOT</version><!-- {x-version-update:google-cloud-advisorynotifications:current} -->
   </parent>
   <dependencies>
+    <dependency>
+      <groupId>org.jspecify</groupId>
+      <artifactId>jspecify</artifactId>
+    </dependency>
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>

java-agentregistry/proto-google-cloud-agentregistry-v1/pom.xml

@@ -13,6 +13,10 @@
     <version>0.1.0-SNAPSHOT</version><!-- {x-version-update:google-cloud-agentregistry:current} -->
   </parent>
   <dependencies>
+    <dependency>
+      <groupId>org.jspecify</groupId>
+      <artifactId>jspecify</artifactId>
+    </dependency>
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>

java-aiplatform/proto-google-cloud-aiplatform-v1/pom.xml

@@ -13,6 +13,10 @@
     <version>3.95.0-SNAPSHOT</version><!-- {x-version-update:google-cloud-aiplatform:current} -->
   </parent>
   <dependencies>
+    <dependency>
+      <groupId>org.jspecify</groupId>
+      <artifactId>jspecify</artifactId>
+    </dependency>
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>

java-aiplatform/proto-google-cloud-aiplatform-v1beta1/pom.xml

@@ -13,6 +13,10 @@
     <version>3.95.0-SNAPSHOT</version><!-- {x-version-update:google-cloud-aiplatform:current} -->
   </parent>
   <dependencies>
+    <dependency>
+      <groupId>org.jspecify</groupId>
+      <artifactId>jspecify</artifactId>
+    </dependency>
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>

java-alloydb-connectors/proto-google-cloud-alloydb-connectors-v1/pom.xml

@@ -13,6 +13,10 @@
     <version>0.72.0-SNAPSHOT</version><!-- {x-version-update:google-cloud-alloydb-connectors:current} -->
   </parent>
   <dependencies>
+    <dependency>
+      <groupId>org.jspecify</groupId>
+      <artifactId>jspecify</artifactId>
+    </dependency>
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>