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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 getBranch(self, name, **context):
 """Return a branch of this tree where the 'name' OID may reside"""

        for keyLen in self._vars.getKeysLens():
            subName = name[:keyLen]
            if subName in self._vars:
                return self._vars[subName]

        raise error.NoSuchObjectError(name=name, idx=context.get('idx'))