def METHOD_NAME(self):
    response = self.get_success_response(
        self.organization.slug,
    )
    assert response.data == [
        {"key": "tag1"},
        {"key": "tag2"},
        {"key": "tag3"},
        {"key": "tag4"},
    ]
    # When metric names are supplied, get intersection of tag names:
    response = self.get_success_response(
        self.organization.slug,
        metric=["metric1", "metric2"],
    )
    assert response.data == [
        {"key": "tag1"},
        {"key": "tag2"},
    ]
    response = self.get_success_response(
        self.organization.slug,
        metric=["metric1", "metric2", "metric3"],
    )
    assert response.data == []