use super::ContextualUserFragment;use std::fmt::Display;/// Maximum size of the extension's model-facing generated-image path hint.const MAX_IMAGE_GENERATION_OUTPUT_HINT_BYTES: usize = 1024;/// Returns the extension's model-facing hint, or omits it if the path makes it too large.pub fn extension_image_generation_output_hint(    image_output_dir: impl Display,    image_output_path: impl Display,) -> Option<String> {    let hint = image_generation_hint(image_output_dir, image_output_path);    (hint.len() <= MAX_IMAGE_GENERATION_OUTPUT_HINT_BYTES).then_some(hint)}fn image_generation_hint(    image_output_dir: impl Display,    image_output_path: impl Display,) -> String {    format!(        "Generated images are saved to {image_output_dir} as {image_output_path} by default.\nIf you need to use a generated image at another path, copy it and leave the original in place unless the user explicitly asks you to delete it."    )}#[derive(Debug, Clone, PartialEq)]pub(crate) struct ImageGenerationInstructions {    image_output_dir: String,    image_output_path: String,}impl ImageGenerationInstructions {    pub(crate) fn new(image_output_dir: impl Display, image_output_path: impl Display) -> Self {        Self {            image_output_dir: image_output_dir.to_string(),            image_output_path: image_output_path.to_string(),        }    }}impl ContextualUserFragment for ImageGenerationInstructions {    fn role(&self) -> &'static str {        "developer"    }    fn markers(&self) -> (&'static str, &'static str) {        Self::type_markers()    }    fn type_markers() -> (&'static str, &'static str) {        ("", "")    }    fn body(&self) -> String {        image_generation_hint(&self.image_output_dir, &self.image_output_path)    }}