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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 ascii_tree(self, no_types: bool = False, val_count: bool = False) -> str: """Generate ASCII art representation of the schema tree. Args: no_types: Suppress output of data type info. val_count: Show accumulated validation counts. Returns: String with the ASCII tree. """

        return self.schema._ascii_tree("", no_types, val_count)