3 files changed, 16 insertions, 8 deletions
diff --git a/mingling_core/src/program/collection.rs b/mingling_core/src/program/collection.rs
index d5aab4b..14705ac 100644
--- a/mingling_core/src/program/collection.rs
+++ b/mingling_core/src/program/collection.rs
@@ -4,7 +4,7 @@ use std::pin::Pin;
 #[cfg(feature = "dispatch_tree")]
 use crate::Dispatcher;
 
-use crate::{AnyOutput, ChainProcess, Groupped, RenderResult};
+use crate::{AnyOutput, ChainProcess, Grouped, RenderResult};
 
 #[cfg(feature = "structural_renderer")]
 use crate::{StructuralRendererSetting, error::StructuralRendererSerializeError};
@@ -21,9 +21,17 @@ pub use mock::*;
 pub trait ProgramCollect {
     /// Enum type representing internal IDs for the program
     type Enum;
-    type ErrorDispatcherNotFound: Groupped<Self::Enum>;
-    type ErrorRendererNotFound: Groupped<Self::Enum>;
-    type ResultEmpty: Groupped<Self::Enum>;
+    /// Error type when a dispatcher is not found for the given member
+    type ErrorDispatcherNotFound: Grouped<Self::Enum>;
+
+    /// Error type when a renderer is not found for the given member
+    type ErrorRendererNotFound: Grouped<Self::Enum>;
+
+    /// Result type for an empty chain result
+    ///
+    /// When the `extra_macros` feature is enabled,
+    /// you can use the `empty_result!()` macro to create this
+    type ResultEmpty: Grouped<Self::Enum>;
 
     /// Use a prefix tree to quickly match arguments and dispatch to an Entry
     #[cfg(feature = "dispatch_tree")]
diff --git a/mingling_core/src/program/collection/mock.rs b/mingling_core/src/program/collection/mock.rs
index 9b2e7af..5847f10 100644
--- a/mingling_core/src/program/collection/mock.rs
+++ b/mingling_core/src/program/collection/mock.rs
@@ -4,7 +4,7 @@ use std::pin::Pin;
 #[cfg(feature = "dispatch_tree")]
 use crate::Dispatcher;
 
-use crate::{AnyOutput, ChainProcess, Groupped, ProgramCollect, RenderResult};
+use crate::{AnyOutput, ChainProcess, Grouped, ProgramCollect, RenderResult};
 
 #[cfg(feature = "structural_renderer")]
 use crate::{StructuralRendererSetting, error::StructuralRendererSerializeError};
@@ -23,7 +23,7 @@ pub enum MockProgramCollect {
     Bar,
 }
 
-impl Groupped<MockProgramCollect> for MockProgramCollect {
+impl Grouped<MockProgramCollect> for MockProgramCollect {
     fn member_id() -> MockProgramCollect {
         MockProgramCollect::Foo
     }
diff --git a/mingling_core/src/program/hook.rs b/mingling_core/src/program/hook.rs
index 56d8e0e..db1691b 100644
--- a/mingling_core/src/program/hook.rs
+++ b/mingling_core/src/program/hook.rs
@@ -678,7 +678,7 @@ where
 #[cfg(test)]
 mod tests {
     use super::*;
-    use crate::Groupped;
+    use crate::Grouped;
     use std::sync::atomic::{AtomicBool, Ordering};
 
     #[derive(Debug, Clone, Copy, PartialEq, Eq)]
@@ -694,7 +694,7 @@ mod tests {
         }
     }
 
-    impl Groupped<MockHookEnum> for MockHookEnum {
+    impl Grouped<MockHookEnum> for MockHookEnum {
         fn member_id() -> MockHookEnum {
             MockHookEnum::A
         }