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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 add(self, original_index, operation):
 """Add an operation to this Run instance. :Parameters: - `original_index`: The original index of this operation within a larger bulk operation. - `operation`: The operation document. """

        self.index_map.append(original_index)
        self.ops.append(operation)