class_docstr: A Keras Layer implementing BiFPN Node.
code: def call(self, feats, training):
      nodes = []
      for i, input_offset in enumerate(self.inputs_offsets):
          input_node = feats[input_offset]
          input_node = self.resample_layers[i](
              input_node, training, feats
          )
          nodes.append(input_node)
      new_node = self.fuse_features(nodes)
      new_node = self.op_after_combine(new_node)
      return feats + [new_node]
  
imports: import functools
  from absl import logging
  import numpy
  import tensorflow
  import utils
  from .None import fpn_configs
label_desc: Use image node_id 5 for calling the FNode obj's underlying member method code with example usage: obj.call(feats, training) and returns: unknown