[Lombok] Properly support Guava collections with @Singular

^KT-53683 Fixed

plugins/lombok/testData/box/builderGuava.kt

@@ -0,0 +1,68 @@
+// WITH_GUAVA
+// WITH_STDLIB
+// FULL_JDK
+// FILE: User.java
+import lombok.Builder;
+import lombok.Data;
+import lombok.Singular;
+
+@Builder
+@Data
+public class User {
+    @Singular private com.google.common.collect.ImmutableMap<String, Integer> numbers;
+    @Singular private com.google.common.collect.ImmutableList<String> statuses;
+    @Singular private com.google.common.collect.ImmutableTable<String, String, String> values;
+}
+
+// FILE: Other.java
+import lombok.Builder;
+import lombok.Data;
+import lombok.Singular;
+
+@Builder(setterPrefix = "with")
+@Data
+public class Other {
+    @Singular("singleSome") private java.util.List<Integer> some;
+}
+
+// FILE: test.kt
+import com.google.common.collect.ImmutableTable
+import com.google.common.collect.HashBasedTable
+
+fun box(): String {
+    val userBuilder = User.builder()
+        .status("wrong")
+        .clearStatuses()
+        .status("hello")
+        .statuses(listOf("world", "!"))
+        .number("1", 1)
+        .numbers(mapOf("2" to 2, "3" to 3))
+        .value("1", "a", "hello")
+        .values(ImmutableTable.of("2", "b", "world"))
+
+    val user = userBuilder.build()
+
+    val outer = Other.builder()
+        .withSingleSome(1)
+        .withSome(listOf(2, 3))
+        .build()
+
+    val expectedNumbers = mapOf("1" to 1, "2" to 2, "3" to 3)
+    val expectedStatuses = listOf("hello", "world", "!")
+    val expectedSome = listOf(1, 2, 3)
+    val expectedValues = HashBasedTable.create<String, String, String>().apply {
+        put("1", "a", "hello")
+        put("2", "b", "world")
+    }
+
+    return if (
+        user.numbers == expectedNumbers &&
+        user.statuses == expectedStatuses &&
+        user.values == expectedValues &&
+        outer.some == expectedSome
+    ) {
+        "OK"
+    } else {
+        "Error: $user"
+    }
+}