Attribute Macro removed_in 

#[removed_in]

Companion attribute to Rust’s built-in #[deprecated] for carrying a removed_in = "VERSION" hint that rustc doesn’t recognize.

Rust’s #[deprecated(since = "X", note = "Y")] supports only since and note. This companion attribute supplies the removal version that the plexus-macros codegen folds into the method’s DeprecationInfo.removed_in field on the emitted MethodSchema.

Example

#[deprecated(since = "0.5", note = "use `new_method` instead")]
#[plexus_macros::removed_in("0.6")]
#[plexus_macros::method]
async fn legacy(&self) -> impl Stream<Item = String> + Send + 'static {
    // ...
}

Requirements

#[plexus_macros::removed_in] is only meaningful when paired with #[deprecated]. The #[plexus_macros::activation] macro emits a compile error when it encounters #[removed_in] on a method that doesn’t also carry #[deprecated].

As a standalone attribute (outside an #[activation] block) this is a no-op that returns the item unchanged — the activation macro parses and strips it during codegen.