Deprecated. Replaced by documenting never as a return type. It is going to be removed in Psalm 5. Deprecated. Has no effect since Psalm 3 and is going to be removed in Psalm 5. Deprecated. PHPStorm now supports generics for the most part and @psalm- annotations can be used Deprecated. Will be replaced by adding echo to forbiddenFunctions in Psalm 5. Default is runtime-specific: if not present, Psalm will only load the Xdebug stub if psalm has unloaded the extension. Deprecated. In Psalm 5 extensions will be loaded based on composer.json and overridden with enableExtensions/disableExtensions. Setting `totallyTyped` to `"true"` is equivalent to setting `errorLevel` to `"1"`. Setting `totallyTyped` to `"false"` is equivalent to setting `errorLevel` to `"2"` and `reportMixedIssues` to `"false"` Deprecated. Replaced by `errorLevel` and `reportMixedIssues`.