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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def set_custom_getter_compose(custom_getter):
 """Set a custom getter in the current variable scope. Do not overwrite the existing custom getter - rather compose with it. Args: custom_getter: a custom getter. """

  tf.get_variable_scope().set_custom_getter(
      _compose_custom_getters(tf.get_variable_scope().custom_getter,
                              custom_getter))