import org.argeo.slc.execution.ExecutionModuleDescriptor;
import org.argeo.slc.execution.ExecutionSpec;
import org.argeo.slc.execution.ExecutionSpecAttribute;
+import org.argeo.slc.execution.RefSpecAttribute;
+import org.argeo.slc.execution.RefValue;
+import org.argeo.slc.primitive.PrimitiveSpecAttribute;
+import org.argeo.slc.primitive.PrimitiveUtils;
+import org.argeo.slc.primitive.PrimitiveValue;
import org.springframework.aop.scope.ScopedObject;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactory;