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@ -447,6 +447,22 @@ class MutableLibrary(Library, MutableMapping[str, 'Pattern'], metaclass=ABCMeta)
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del self[old_name]
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return self
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def create(self, base_name: str) -> Tuple[str, 'Pattern']:
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"""
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Convenience method to create an empty pattern, choose a name
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for it, add it with that name, and return both the pattern and name.
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Args:
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base_name: Prefix used when naming the pattern
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Returns:
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(name, pattern) tuple
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"""
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from .pattern import Pattern
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name = self.get_name(base_name)
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pat = Pattern()
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self[name] = value
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def name_and_set(
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self,
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base_name: str,
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