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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 crypto_key_version_path( cls, project, location, key_ring, crypto_key, crypto_key_version ):
 """Return a fully-qualified crypto_key_version string."""

        return google.api_core.path_template.expand(
            "projects/{project}/locations/{location}/keyRings/{key_ring}/cryptoKeys/{crypto_key}/cryptoKeyVersions/{crypto_key_version}",
            project=project,
            location=location,
            key_ring=key_ring,
            crypto_key=crypto_key,
            crypto_key_version=crypto_key_version,
        )