Nomad changes

docs/snippets/java/config/document_structure_config.md

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+```java title="Document Structure Config (Java)"
+import dev.kreuzberg.Kreuzberg;
+import dev.kreuzberg.ExtractionConfig;
+import dev.kreuzberg.ExtractionResult;
+
+ExtractionConfig config = ExtractionConfig.builder()
+    .includeDocumentStructure(true)
+    .build();
+
+ExtractionResult result = Kreuzberg.extractFileSync("document.pdf", config);
+
+if (result.getDocumentStructure().isPresent()) {
+    var document = result.getDocumentStructure().get();
+    for (var node : document.nodes()) {
+        System.out.println("[" + node.content().nodeType() + "]");
+    }
+}
+```