code: def _very_close(x, y):
      return tf.math.nextafter(x, y) >= y
  
file_path: probability/tensorflow_probability/python/optimizer/linesearch/hager_zhang.py
imports: import collections
  import numpy
  import tensorflow.compat.v2
  from tensorflow_probability.python.internal import dtype_util
  from tensorflow_probability.python.internal import prefer_static
  from tensorflow_probability.python.optimizer.linesearch.internal import hager_zhang_lib
label_desc: Use image node_id 7 for calling a global function with example usage: _very_close(x, y) and returns: unknown