Update fn update to be in the trait, instead of a freefloating function in the struct

persmgr_derive/src/lib.rs

@@ -86,10 +86,7 @@ pub fn derive_table_meta(input: TokenStream) -> TokenStream {
         impl TableMeta for #ident {
             type PrimaryKey = #key_t;
             const TABLE: &'static str = #table_name;
-        }
-
-        impl #ident {
-            pub async fn update(&mut self, pool: &crate::db::CurrPool) -> anyhow::Result<Self> {
+            async fn update(&mut self, pool: &crate::db::CurrPool) -> anyhow::Result<Self> {
                 #modified_at
                 let session = sqlx::query_as!(
                     #ident,