src/Core/ContentItem.php
public static function returnUrl($postdata=false) {
        if ( ! $postdata ) $postdata = LTIX::ltiRawPostArray();
        return parent::returnUrl($postdata);
    }
public static function returnUrl($postdata=false) {
        if ( ! $postdata ) $postdata = LTIX::ltiRawPostArray();
        return parent::returnUrl($postdata);
    }
public static function returnUrl ( $ postdata = false ) { if ( ! $ postdata ) $ postdata = LTIX :: ltiRawPostArray ( ) ; return parent :: returnUrl ( $ postdata ) ; }
returnUrl - Returns the content_item_return_url

@return string The content_item_return_url or false
returnUrl - Returns the content_item_return_url