anchor.diff:  | Feature       |  IXExplorer  |TRex | Description 
   | Line rate       | Yes |Almost ~15MPPS/core|
   | Multi stream    | 255 | [green]*Unlimited* |
  -| Packet build flexibility | Limited | [green]*Scapy- Ulimited* | e.g GRE/VXLAN/NSH is supported. Can be extended to future protocols
  +| Packet build flexibility | Limited | [green]*Scapy- Unlimited* | e.g GRE/VXLAN/NSH is supported. Can be extended to future protocols
   | Packet Field engine      | limited | [green]*Unlimited* |
   | Tx Mode | Continues/Burst/Multi burst | Continues/Burst/Multi burst|
   | ARP Emulation | Yes | Not yet - workaround |
  
positive.code:         return [ self.create_stream() ]
  
  
  # dynamic load - used for trex console or simulator
  def register():                                                                         <4>        
      return STLS1()
  ----
  
negative.code: 
  Python API examples are located here: `automation/trex_control_plane/stl/examples`.
  
  The Python API library is located here: `automation/trex_control_plane/stl/trex_stl_lib`.
  
  The TRex Console uses the python API library to interact with the TRex server using the JSON-RPC2 protocol over ZMQ.
  
  *file*:: link:{github_stl_examples_path}/stl_bi_dir_flows.py[stl_bi_dir_flows.py]
  
  