# Package com.isomorphic.velocity

- Class Summary
  Class | Description
  --- | ---
  ResponseDataHandler | This class represents the functionality available in Transaction Chaining when you use the $responseData template variable.
  ResponseDataWrapper | This class is a wrapper over a DSResponse data object, that enables Velocity code to treat a multi-valued data object (a List or array), as either a list or a single object.
  ResponsesHandler | This class represents the functionality available in Transaction Chaining when you use the $responses template variable.