code: def mean_recv(feat):
      """mean_recv"""
      return fluid.layers.sequence_pool(feat, pool_type="average")
  
file_path: PGL/legacy/examples/unsup_graphsage/model.py
imports: import paddle
  import paddle.fluid
label_desc: Use image node_id 2 for calling a global function with example usage: mean_recv(feat) and returns: fluid