Nomad changes

docs/snippets/kotlin/llm/structured_extraction.md

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+```kotlin title="Kotlin"
+import dev.kreuzberg.*
+import java.nio.file.Paths
+import java.util.Optional
+
+fun main() {
+    val schema = mapOf(
+        "type" to "object",
+        "properties" to mapOf(
+            "title" to mapOf("type" to "string"),
+            "authors" to mapOf("type" to "array", "items" to mapOf("type" to "string")),
+            "date" to mapOf("type" to "string")
+        ),
+        "required" to listOf("title", "authors", "date"),
+        "additionalProperties" to false
+    )
+
+    val llm = LlmConfig.builder()
+        .withModel("openai/gpt-4o-mini")
+        .build()
+
+    val structured = StructuredExtractionConfig(
+        schema,
+        "document",
+        null,
+        true,
+        null,
+        llm
+    )
+
+    val config = ExtractionConfig.builder()
+        .withStructuredExtraction(Optional.of(structured))
+        .build()
+
+    val result = Kreuzberg.extractFileSync(Paths.get("paper.pdf"), null, config)
+    result.structuredOutput()?.let { println(it) }
+}
+```