Updated put api of call

src/main/java/net/gepafin/tendermanagement/util/Utils.java

@@ -12,6 +12,7 @@ import org.apache.commons.collections4.MapUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.lang.reflect.Field;
 import java.lang.reflect.Type;
 import java.nio.charset.StandardCharsets;
 import java.util.Base64;
@@ -147,4 +148,17 @@ public class Utils {
 		}
 		return null;
 	}
+	public static <T> void retainOnlySpecificFields(T requestObject, List<T> retainFields) throws IllegalAccessException {
+		// Get all declared fields of the request object's class
+		Field[] fields = requestObject.getClass().getDeclaredFields();
+
+		for (Field field : fields) {
+			field.setAccessible(true); // To allow access to private fields
+
+			// Check if the field is in the retainFields list
+			if (!retainFields.contains(field.getName())) {
+				field.set(requestObject, null); // Set the field to null if not in the retain list
+			}
+		}
+	}
 }