static memory plugin fix

plugins/zenoh-plugin-storage-manager/src/memory_backend/mod.rs

@@ -13,21 +13,17 @@
 //
 use async_std::sync::RwLock;
 use async_trait::async_trait;
-use zenoh_plugin_trait::Plugin;
 use std::collections::HashMap;
 use std::sync::Arc;
 use zenoh::prelude::r#async::*;
 use zenoh::time::Timestamp;
 use zenoh_backend_traits::config::{StorageConfig, VolumeConfig};
 use zenoh_backend_traits::*;
+use zenoh_plugin_trait::Plugin;
 use zenoh_result::ZResult;
 
 use crate::MEMORY_BACKEND_NAME;
 
-pub fn create_memory_backend(config: VolumeConfig) -> ZResult<VolumePlugin> {
-    Ok(Box::new(MemoryBackend { config }))
-}
-
 pub struct MemoryBackend {
     config: VolumeConfig,
 }
@@ -38,8 +34,10 @@ impl Plugin for MemoryBackend {
 
     const STATIC_NAME: &'static str = MEMORY_BACKEND_NAME;
 
-    fn start(name: &str, args: &Self::StartArgs) -> ZResult<Self::RunningPlugin> {
-        todo!()
+    fn start(_: &str, args: &VolumeConfig) -> ZResult<VolumePlugin> {
+        Ok(Box::new(MemoryBackend {
+            config: args.clone(),
+        }))
     }
 }