code: def nested_while_loops(n1, n2):
      i = 0
      l = tf.TensorArray(
          tf.int32, size=0, dynamic_size=True, element_shape=()
      )
      while i < n1:
          j = 0
          s = 0
          while j < n2:
              s = s * 10 + i * j
              j += 1
          l = l.write(i, s)
          i += 1
      return l.stack()
  
imports: import functools
  import itertools
  from absl.testing import parameterized
  import tensorflow
  from tensorflow.python.autograph.tests import reference_test_base
label_desc: Use image node_id 13 for calling a global function with example usage: nested_while_loops(n1, n2) and returns: l