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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 data_item_path(cls, project, dataset, data_item):
 """Return a fully-qualified data_item string."""

        return google.api_core.path_template.expand(
            "projects/{project}/datasets/{dataset}/dataItems/{data_item}",
            project=project,
            dataset=dataset,
            data_item=data_item,
        )