def public_key_infrastructure(self) -> PublicKeyInfrastructureRequestBuilder:
        """
        Provides operations to manage the publicKeyInfrastructure property of the microsoft.graph.directory entity.
        """
        from .public_key_infrastructure.public_key_infrastructure_request_builder import PublicKeyInfrastructureRequestBuilder

        return PublicKeyInfrastructureRequestBuilder(self.request_adapter, self.path_parameters)

        Provides operations to manage the publicKeyInfrastructure property of the microsoft.graph.directory entity.
        
msgraph/generated/directory/directory_request_builder.py