[KT-79319] fix: resolve NullPointerException in Kotlin imports
diff --git a/plugins/lombok/lombok.k2/src/org/jetbrains/kotlin/lombok/k2/generators/AbstractBuilderGenerator.kt b/plugins/lombok/lombok.k2/src/org/jetbrains/kotlin/lombok/k2/generators/AbstractBuilderGenerator.kt
index 6a7219b..c0088b8 100644
--- a/plugins/lombok/lombok.k2/src/org/jetbrains/kotlin/lombok/k2/generators/AbstractBuilderGenerator.kt
+++ b/plugins/lombok/lombok.k2/src/org/jetbrains/kotlin/lombok/k2/generators/AbstractBuilderGenerator.kt
@@ -259,8 +259,8 @@
 
     @OptIn(SymbolInternals::class)
     private fun extractBuilderWithDeclarations(classSymbol: FirClassSymbol<*>): List<BuilderWithDeclaration<T>>? {
+        val annotationSymbol = annotationClassId.toSymbol(session) as? FirRegularClassSymbol ?: return emptyList()
         return buildList {
-            val annotationSymbol = annotationClassId.toSymbol(session) as FirRegularClassSymbol
             val allowedTargets = annotationSymbol.fir.getAllowedAnnotationTargets(session)
 
             if (allowedTargets.contains(KotlinTarget.CLASS)) {
diff --git a/plugins/lombok/testData/diagnostics/javaConstantImport.kt b/plugins/lombok/testData/diagnostics/javaConstantImport.kt
new file mode 100644
index 0000000..cb71772
--- /dev/null
+++ b/plugins/lombok/testData/diagnostics/javaConstantImport.kt
@@ -0,0 +1,40 @@
+// FIR_IDENTICAL
+
+// FILE: JavaConstant.java
+
+public class JavaConstant {
+    private JavaConstant() {
+        throw new AssertionError("Utility class should not be instantiated");
+    }
+    public static String CONST = "CONST";
+}
+
+// FILE: LombokExample.java
+
+import lombok.Builder;
+
+@Builder
+public class LombokExample {
+    private String name;
+    private int age;
+}
+
+// FILE: test.kt
+
+import JavaConstant.CONST
+import LombokExample
+
+data class Context(
+   val id: String,
+)
+
+fun test() {
+    val context = Context("test")
+    println(CONST)
+    
+    // Use Lombok builder to ensure the builder generator is triggered
+    val example = LombokExample.builder()
+        .name("Test")
+        .age(25)
+        .build()
+}
\ No newline at end of file
diff --git a/test-project/pom.xml b/test-project/pom.xml
new file mode 100644
index 0000000..51d3f14
--- /dev/null
+++ b/test-project/pom.xml
@@ -0,0 +1,81 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>bzh.zomzog.poc</groupId>
+    <artifactId>k220</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <java.version>17</java.version>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <kotlin.code.style>official</kotlin.code.style>
+        <kotlin.compiler.jvmTarget>17</kotlin.compiler.jvmTarget>
+        <kotlin.version>2.2.0</kotlin.version>
+        <lombok.version>1.18.38</lombok.version>
+    </properties>
+    
+    <dependencies>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-stdlib</artifactId>
+            <version>${kotlin.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>${lombok.version}</version>
+            <scope>provided</scope>
+        </dependency>
+    </dependencies>
+    
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.jetbrains.kotlin</groupId>
+                <artifactId>kotlin-maven-plugin</artifactId>
+                <version>${kotlin.version}</version>
+                <executions>
+                    <execution>
+                        <id>compile</id>
+                        <goals>
+                            <goal>compile</goal>
+                        </goals>
+                        <configuration>
+                            <sourceDirs>
+                                <source>src/main/java</source>
+                                <source>src/main/kotlin</source>
+                                <source>src/main/resources</source>
+                            </sourceDirs>
+                        </configuration>
+                    </execution>
+                </executions>
+                <configuration>
+                    <args>
+                        <arg>-Xjsr305=strict</arg>
+                        <arg>-java-parameters</arg>
+                    </args>
+                    <jvmTarget>${java.version}</jvmTarget>
+                    <compilerPlugins>
+                        <plugin>lombok</plugin>
+                    </compilerPlugins>
+                </configuration>
+                <dependencies>
+                    <dependency>
+                        <groupId>org.jetbrains.kotlin</groupId>
+                        <artifactId>kotlin-maven-lombok</artifactId>
+                        <version>${kotlin.version}</version>
+                    </dependency>
+                    <dependency>
+                        <groupId>org.projectlombok</groupId>
+                        <artifactId>lombok</artifactId>
+                        <version>${lombok.version}</version>
+                        <scope>compile</scope>
+                    </dependency>
+                </dependencies>
+            </plugin>
+        </plugins>
+    </build>
+</project>
\ No newline at end of file
diff --git a/test-project/src/main/java/bzh/zomzog/poc/k220/JavaConstant.java b/test-project/src/main/java/bzh/zomzog/poc/k220/JavaConstant.java
new file mode 100644
index 0000000..b5cdd9d
--- /dev/null
+++ b/test-project/src/main/java/bzh/zomzog/poc/k220/JavaConstant.java
@@ -0,0 +1,8 @@
+package bzh.zomzog.poc.k220;
+
+public class JavaConstant {
+    private JavaConstant() {
+        throw new AssertionError("Utility class should not be instantiated");
+    }
+    public static String CONST = "CONST";
+}
\ No newline at end of file
diff --git a/test-project/src/main/kotlin/bzh/zomzog/poc/k220/Context.kt b/test-project/src/main/kotlin/bzh/zomzog/poc/k220/Context.kt
new file mode 100644
index 0000000..b00c3bd
--- /dev/null
+++ b/test-project/src/main/kotlin/bzh/zomzog/poc/k220/Context.kt
@@ -0,0 +1,7 @@
+package bzh.zomzog.poc.k220
+
+import bzh.zomzog.poc.k220.JavaConstant.CONST
+
+data class Context(
+   val id: String,
+)
\ No newline at end of file