code: def fft2(x):
      complex_input = _get_complex_tensor_from_tuple(x)
      complex_output = tf.signal.fft2d(complex_input)
      return tf.math.real(complex_output), tf.math.imag(complex_output)
  
file_path: keras/keras/backend/tensorflow/math.py
imports: import tensorflow
  from keras.backend import standardize_dtype
  from keras.backend.tensorflow.core import convert_to_tensor
label_desc: Use image node_id 10 for calling a global function with example usage: fft2(x) and returns: tf,  tf