Generic.PHP.ForbiddenFunctions: Support for function within a namespace

[soullivaneuh]

Summary

Using rector, I can migrate my codebase to use the JSON_THROW_ON_ERROR flag with the native json_(en|de)code function instead of using \Safe\json_decode usage from the thecodingmachine/safe package.

In order to prevent the usage of the \Safe\json_decode function, I would like to configuring it on the Generic.PHP.ForbiddenFunctions sniff like so:

<rule ref="Generic.PHP.ForbiddenFunctions">
  <properties>
      <property name="forbiddenFunctions" type="array">
          <element key="\Safe\json_decode" value="json_decode"/>
          <element key="\Safe\json_encode" value="json_encode"/>
      </property>
  </properties>
</rule>

Unfortunately, this sniff looks to support only native function call.

Is the support of namespaced function for this sniff an idea to be considered?

Concrete case to be managed

\Safe\json_encode($myArray);

use function Safe\json_encode;

json_encode($myArray);