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thephpleague · Dec 10, 2024 · 2df5562 · 2df5562
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diff --git a/docs/9.0/converter/html.md b/docs/9.0/converter/html.md
@@ -49,7 +49,7 @@ This method sets the optional attribute name for the field name on the HTML `td`
 <p class="message-info">New feature introduced in version <code>9.20.0</code></p>
 
 ```php
-public HTMLConverter::formatter(?callback $formatter): mixed
+public HTMLConverter::formatter(?callable $formatter): self
 ```
 
 This method allow to apply a callback prior to converting your collection individual item.

diff --git a/docs/9.0/converter/json.md b/docs/9.0/converter/json.md
@@ -116,7 +116,7 @@ $converter->indentSize; //returns the value used
 ### Json encode formatter
 
 ```php
-public JsonConverter::formatter(?callback $formatter): mixed
+public JsonConverter::formatter(?callable $formatter): self
 ```
 
 This method allow to apply a callback prior to `json_encode` your collection individual item.

diff --git a/docs/9.0/converter/xml.md b/docs/9.0/converter/xml.md
@@ -50,7 +50,7 @@ This method sets the XML field name and optionally the attribute name for the fi
 <p class="message-info">New feature introduced in version <code>9.20.0</code></p>
 
 ```php
-public XMLConverter::formatter(?callback $formatter): mixed
+public XMLConverter::formatter(?callable $formatter): self
 ```
 
 This method allow to apply a callback prior to converting your collection individual item.