use chrono::{DateTime, Utc};use serde::{Deserialize, Serialize};use std::sync::Arc; #[derive(Clone, Serialize, Deserialize, Debug, PartialEq)]pub struct ExtensionApiManifest {    pub name: String,    pub version: Arc<str>,    pub description: Option<String>,    pub authors: Vec<String>,    pub repository: String,    pub schema_version: Option<i32>,    pub wasm_api_version: Option<String>,} #[derive(Clone, Serialize, Deserialize, Debug, PartialEq)]pub struct ExtensionMetadata {    pub id: Arc<str>,    #[serde(flatten)]    pub manifest: ExtensionApiManifest,    pub published_at: DateTime<Utc>,    pub download_count: u64,} #[derive(Serialize, Deserialize)]pub struct GetExtensionsResponse {    pub data: Vec<ExtensionMetadata>,}