Add alternative to apoc deprecation

Author: angrykoala

.changeset/lazy-buckets-peel.md

@@ -9,3 +9,13 @@ Deprecate apoc functions and procedures. These will no longer be supported in ve
 - `apoc.util.validatePredicate`
 - `apoc.cypher.runFirstColumnMany`
 - `apoc.cypher.runFirstColumnSingle`
+
+These can still be used by using the `Function` class directly:
+
+```js
+const convertFormat = new Cypher.Function("apoc.date.convertFormat", [
+    new Cypher.Variable(),
+    new Cypher.Literal("iso_zoned_date_time"),
+    new Cypher.Literal("iso_offset_date_time"),
+]);
+```

docs/modules/ROOT/pages/functions.adoc

@@ -46,7 +46,7 @@ In some cases, you may need to use functions that are not available in Cypher Bu
 For instance, if you are using plugins or some of the newest features of Neo4j.
 
 For these cases, you can use the class `Function` to create custom functions. 
-This example calls link:https://neo4j.com/docs/cypher-manual/current/functions/mathematical-numeric/#functions-isnan[`isNan`] as a custom function:
+This example calls an arbitrary function `myFunction`:
 
 [source, javascript]
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