def METHOD_NAME(self):
    """
    If a path and hashed value appears in all environments, we know that
    it is a common value and can be moved to the common config.
    """
    for path, values in self.environments_duplicates.items():
        for hashed_value, envs in values.items():
            if len(envs) == self.env_count:
                for env in envs:
                    delete_nested_key(self.environments_data[env], path)
                    set_nested_key(self.common_data, path,
                                   self.hash_value_lookup[hashed_value])