d Doco changes

docs/how_to/create_custom_verify_methods.md

@@ -3,7 +3,7 @@
 <!-- toc -->
 ## Contents
 
-  * [Custom Verify Method](#custom-verify-method)
+  * [Create a Custom Verify Method](#create-a-custom-verify-method)
   * [Create a `Verifiable` Object](#create-a-verifiable-object)<!-- endToc -->
 
 ## Create a Custom Verify Method
@@ -12,7 +12,24 @@ One method is to create a custom `verify()` method for your particular situation
 
 For example, as we use it to handle json:
 
-snippet: verify_as_json
+<!-- snippet: verify_as_json -->
+<a id='snippet-verify_as_json'></a>
+```py
+def verify_as_json(
+    object,
+    reporter=None,
+    *,  # enforce keyword arguments - https://www.python.org/dev/peps/pep-3102/
+    deserialize_json_fields = False,
+    options: Optional[Options] = None
+):
+    if deserialize_json_fields:
+        object = approvaltests.utils.deserialize_json_fields(object)
+    options = initialize_options(options, reporter)
+    n_ = to_json(object) + "\n"
+    verify(n_, None, encoding="utf-8", newline="\n", options=options)
+```
+<sup><a href='/approvaltests/approvals.py#L189-L202' title='Snippet source file'>snippet source</a> | <a href='#snippet-verify_as_json' title='Start of snippet'>anchor</a></sup>
+<!-- endSnippet -->
 
 ## Create a `Verifiable` Object