Add warning about closure not being cachable

Nyholm · Nyholm · commit 3dd0f143eb46 · 2021-03-31T09:24:36.000+02:00
diff --git a/reference/constraints/Callback.rst b/reference/constraints/Callback.rst
@@ -251,6 +251,12 @@ constructor of the Callback constraint::
         }
     }
 
+.. warning::
+
+    When you are using a ``Closure`` or anonymous function, they cannot be cached
+    like other annotations. For best performance, it is recommended to use a static
+    callback method.
+
 Options
 -------
 

Original file line number	Diff line number	Diff line change
`@@ -251,6 +251,12 @@ constructor of the Callback constraint::`
`251`	`251`	`}`
`252`	`252`	`}`
`253`	`253`
	`254`	`+.. warning::`
	`255`	`+`
	`256`	+ When you are using a ``Closure`` or anonymous function, they cannot be cached
	`257`	`+ like other annotations. For best performance, it is recommended to use a static`
	`258`	`+ callback method.`
	`259`	`+`
`254`	`260`	`Options`
`255`	`261`	`-------`
`256`	`262`