fixed allowed symbols

Author: gisilvs

tensorflow_probability/python/experimental/vi/__init__.py

@@ -17,6 +17,8 @@
 from tensorflow_probability.python.experimental.vi import util
 from tensorflow_probability.python.experimental.vi.automatic_structured_vi import build_asvi_surrogate_posterior
 from tensorflow_probability.python.experimental.vi.automatic_structured_vi import register_asvi_substitution_rule
+from tensorflow_probability.python.experimental.vi.cascading_flows import build_cf_surrogate_posterior
+from tensorflow_probability.python.experimental.vi.cascading_flows import register_cf_substitution_rule
 from tensorflow_probability.python.experimental.vi.surrogate_posteriors import build_affine_surrogate_posterior
 from tensorflow_probability.python.experimental.vi.surrogate_posteriors import build_affine_surrogate_posterior_from_base_distribution
 from tensorflow_probability.python.experimental.vi.surrogate_posteriors import build_factored_surrogate_posterior
@@ -29,11 +31,12 @@
     'build_affine_surrogate_posterior',
     'build_affine_surrogate_posterior_from_base_distribution',
     'build_asvi_surrogate_posterior',
-    'builf_cf_surrogate_posterior'
+    'build_cf_surrogate_posterior',
     'build_factored_surrogate_posterior',
     'build_split_flow_surrogate_posterior',
     'build_trainable_location_scale_distribution',
     'register_asvi_substitution_rule',
+    'register_cf_substitution_rule',
     'util',
 ]