How to Grayscale Image in Groovy - Code Snippet

// Task: Grayscale Image
// Language: Groovy

def grayscale_image() {
    // Implementation for Grayscale Image
    def result = ...; // Initialize variable
    // TODO: Implement core logic here
    // Step 1: Prepare data
    // Step 2: Process Grayscale Image
    println("Done");
}