public function addAliasMap(array $aliasMap)
    {
        foreach ($aliasMap['aliasToClassNameMapping'] as $alias => $originalClassName) {
            $lowerCaseAlias = strtolower($alias);
            $this->aliasMap['aliasToClassNameMapping'][$lowerCaseAlias] = $originalClassName;
            $this->aliasMap['classNameToAliasMapping'][$originalClassName][$lowerCaseAlias] = $lowerCaseAlias;
        }
    }