feat: Implement the clear and task APIs

Also enabled parallel builds for performance

Fixes #188

Signed-off-by: Eric Deandrea <eric.deandrea@ibm.com>

Author: edeandrea

docling-serve/docling-serve-client/src/main/java/ai/docling/serve/client/ChunkOperations.java

@@ -4,6 +4,7 @@
 import ai.docling.serve.api.chunk.request.HierarchicalChunkDocumentRequest;
 import ai.docling.serve.api.chunk.request.HybridChunkDocumentRequest;
 import ai.docling.serve.api.chunk.response.ChunkDocumentResponse;
+import ai.docling.serve.api.util.ValidationUtils;
 
 /**
  * Base class for document chunking API operations. Provides access to document chunking
@@ -21,6 +22,7 @@ final class ChunkOperations implements DoclingServeChunkApi {
    * and using a hierarchical chunker for splitting the document into smaller chunks.
    */
   public ChunkDocumentResponse chunkSourceWithHierarchicalChunker(HierarchicalChunkDocumentRequest request) {
+    ValidationUtils.ensureNotNull(request, "request");
     return this.httpOperations.executePost("/v1/chunk/hierarchical/source", request, ChunkDocumentResponse.class);
   }
 
@@ -29,6 +31,7 @@ public ChunkDocumentResponse chunkSourceWithHierarchicalChunker(HierarchicalChun
    * and using a hybrid chunker for splitting the document into smaller chunks.
    */
   public ChunkDocumentResponse chunkSourceWithHybridChunker(HybridChunkDocumentRequest request) {
+    ValidationUtils.ensureNotNull(request, "request");
     return this.httpOperations.executePost("/v1/chunk/hybrid/source", request, ChunkDocumentResponse.class);
   }
 }

docling-serve/docling-serve-client/src/main/java/ai/docling/serve/client/ConvertOperations.java

@@ -3,6 +3,7 @@
 import ai.docling.serve.api.DoclingServeConvertApi;
 import ai.docling.serve.api.convert.request.ConvertDocumentRequest;
 import ai.docling.serve.api.convert.response.ConvertDocumentResponse;
+import ai.docling.serve.api.util.ValidationUtils;
 
 /**
  * Base class for document conversion API operations. Provides access to document
@@ -22,6 +23,7 @@ final class ConvertOperations implements DoclingServeConvertApi {
    * @return a {@link ConvertDocumentResponse} containing the processed document data, processing details, and any errors.
    */
   public ConvertDocumentResponse convertSource(ConvertDocumentRequest request) {
+    ValidationUtils.ensureNotNull(request, "request");
     return this.httpOperations.executePost("/v1/convert/source", request, ConvertDocumentResponse.class);
   }
 }