source/Core/BackwardsCompatibleClassNameProvider.php
public function getClassAliasName($className)
    {
        /*
         * Sanitize input: class names in namespaces should not, but may include a leading backslash
         */
        $className = ltrim($className, '\\');
        $classAlias = array_search($className, $this->classMap);

        if ($classAlias === false) {
            $classAlias = null;
        }

        return $classAlias;
    }
public function getClassAliasName($className)
    {
        /*
         * Sanitize input: class names in namespaces should not, but may include a leading backslash
         */
        $className = ltrim($className, '\\');
        $classAlias = array_search($className, $this->classMap);

        if ($classAlias === false) {
            $classAlias = null;
        }

        return $classAlias;
    }
public function getClassAliasName ( $ className ) { /*
         * Sanitize input: class names in namespaces should not, but may include a leading backslash
         */ $ className = ltrim ( $ className , '\\' ) ; $ classAlias = array_search ( $ className , $ this -> classMap ) ; if ( $ classAlias === false ) { $ classAlias = null ; } return $ classAlias ; }
Method returns class alias by given class name.

@param string $className with namespace.

@return string|null
Method returns class alias by given class name .