document Span

src/lib.rs

@@ -495,6 +495,7 @@ fn main() {
 ```
 */
 
+#![deny(missing_docs)]
 #![cfg_attr(not(feature = "std"), no_std)]
 
 #[cfg(feature = "alloc")]

src/macro_hooks.rs

@@ -1,3 +1,5 @@
+#![allow(missing_docs)]
+
 use core::{any::Any, fmt, ops::ControlFlow};
 
 use emit_core::{

src/metric.rs

@@ -348,7 +348,7 @@ impl<'a, P> Metric<'a, P> {
     }
 
     /**
-    Get a reference to the module that owns the underlying data source.
+    Get the module that owns the underlying data source.
     */
     pub fn module(&self) -> &Path<'a> {
         &self.module
@@ -414,8 +414,8 @@ impl<'a, P> Metric<'a, P> {
     /**
     Get the extent for which the sample was generated.
     */
-    pub fn extent(&self) -> &Option<Extent> {
-        &self.extent
+    pub fn extent(&self) -> Option<&Extent> {
+        self.extent.as_ref()
     }
 
     /**