Fixes unmarshalling exception on ModelDetail

src/main/java/io/github/amithkoujalgi/ollama4j/core/models/ModelDetail.java

@@ -2,7 +2,8 @@ package io.github.amithkoujalgi.ollama4j.core.models;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
-import java.util.Map;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import io.github.amithkoujalgi.ollama4j.core.utils.Utils;
 import lombok.Data;
 
 @Data
@@ -16,5 +17,14 @@ public class ModelDetail {
   private String parameters;
   private String template;
   private String system;
-  private Map<String, String> details;
+  private ModelMeta details;
+
+    @Override
+  public String toString() {
+    try {
+      return Utils.getObjectMapper().writerWithDefaultPrettyPrinter().writeValueAsString(this);
+    } catch (JsonProcessingException e) {
+      throw new RuntimeException(e);
+    }
+  }
 }

src/test/java/io/github/amithkoujalgi/ollama4j/integrationtests/TestRealAPIs.java

@@ -4,6 +4,7 @@ import static org.junit.jupiter.api.Assertions.*;
 
 import io.github.amithkoujalgi.ollama4j.core.OllamaAPI;
 import io.github.amithkoujalgi.ollama4j.core.exceptions.OllamaBaseException;
+import io.github.amithkoujalgi.ollama4j.core.models.ModelDetail;
 import io.github.amithkoujalgi.ollama4j.core.models.OllamaResult;
 import io.github.amithkoujalgi.ollama4j.core.models.chat.OllamaChatMessageRole;
 import io.github.amithkoujalgi.ollama4j.core.models.chat.OllamaChatRequestBuilder;
@@ -91,6 +92,19 @@ class TestRealAPIs {
     }
   }
 
+  @Test
+  @Order(3)
+  void testListDtails() {
+    testEndpointReachability();
+    try {
+      ModelDetail modelDetails = ollamaAPI.getModelDetails(config.getModel());
+      assertNotNull(modelDetails);
+      System.out.println(modelDetails);
+    } catch (IOException | OllamaBaseException | InterruptedException | URISyntaxException e) {
+      throw new RuntimeException(e);
+    }
+  }
+
   @Test
   @Order(3)
   void testAskModelWithDefaultOptions() {