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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 workflow_template_path(cls, project, region, workflow_template):
 """Return a fully-qualified workflow_template string."""

        return google.api_core.path_template.expand(
            "projects/{project}/regions/{region}/workflowTemplates/{workflow_template}",
            project=project,
            region=region,
            workflow_template=workflow_template,
        )