@GET @ApiIgnore // until documented
  @Path("{workflowId}")
  @Produces("text/plain")
  public Response getWorkflow(String body, @Context HttpHeaders headers,
      @Context UriInfo ui, @PathParam("workflowId") String workflowId) {
    return handleRequest(headers, body, ui, Request.Type.GET,
        createWorkflowResource(clusterName, workflowId));
  }
Handles: GET /workflows/{workflowId} Get a specific workflow.

@param headers
         http headers
@param ui
         uri info
@param workflowId
         workflow id
@return workflow instance representation
ambari-server/src/main/java/org/apache/ambari/server/api/services/WorkflowService.java