export const processDocuemntFlow = defineFlow(
    {

        name: 'processDocuemntFlow',
        inputSchema: z.string(),
        outputSchema: noteSchema,
    },
   
    async (docuemntUrl) => {
        const llmResponse = await generate({

            model: gemini15FlashPreview,
            prompt: [{ text: `prompt` },
            ], output: { format: "json", schema: noteSchema },
            config: {
                temperature: 1,
            },

        });
        console.log(JSON.stringify(llmResponse));

        return llmResponse.output();
    }
);

How to pass systemInstruction: {
parts: [{“text”: ..}]
}, to the vertex model using genkit

Is there any way to pass systemInstruction Gen kit Nodejs SDK