| HandlerStatusCodes | This interface defines the status codes that can be returned for Tasks. |
| JsonString | Semantic wrapper for string that holds JSON literal. |
| XmlString | Semantic wrapper for string that holds XML literal. |
| HandlerConfigurationException | This exception indicates that a Task is not properly configured. |
| HandlerException | This is the base class for a set of task-related exceptions. |
| HandlerInternalException | This exception indicates an internal error, often from the Intelligence Server. |
| HandlerRequestMalformedException | This exception class represents the condition when an incoming Task request is malformed. |