def METHOD_NAME(self) -> str:
    params = json.loads(self.body)
    certificate_authority_configuration = params.get(
        "CertificateAuthorityConfiguration"
    )
    revocation_configuration = params.get("RevocationConfiguration")
    certificate_authority_type = params.get("CertificateAuthorityType")
    security_standard = params.get("KeyStorageSecurityStandard")
    tags = params.get("Tags")
    certificate_authority_arn = self.acmpca_backend.METHOD_NAME(
        certificate_authority_configuration=certificate_authority_configuration,
        revocation_configuration=revocation_configuration,
        certificate_authority_type=certificate_authority_type,
        security_standard=security_standard,
        tags=tags,
    )
    return json.dumps(dict(CertificateAuthorityArn=certificate_authority_arn))