Googletest export

Explain how to wrap matchers. PiperOrigin-RevId: 357901293

Googletest export
Explain how to wrap matchers. PiperOrigin-RevId: 357901293
7fb047bc · Abseil Team · Derek Mauro · 58937787 · 7fb047bc
Commit 7fb047bc authored Feb 17, 2021 by Abseil Team Committed by Derek Mauro Feb 18, 2021
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@@ -477,6 +477,14 @@ which must be a permanent callback.
    being matched and the matcher parameters).
 3.  You can use `PrintToString(x)` to convert a value `x` of any type to a
    string.
+4.  You can use `ExplainMatchResult()` in a custom matcher to wrap another
+    matcher, for example:
+
+    ```cpp
+    MATCHER_P(NestedPropertyMatches, matcher, "") {
+      return ExplainMatchResult(matcher, arg.nested().property(), result_listener);
+    }
+    ```

 ## Actions {#ActionList}