/**
* Add a <code>FileNameMapper</code>.
* @param FileNameMapper $fileNameMapper a <code>FileNameMapper</code>.
* @throws BadMethodCallException if attempting to add this
* <code>ContainerMapper</code> to itself, or if the specified
* <code>FileNameMapper</code> is itself a <code>ContainerMapper</code>
* that contains this <code>ContainerMapper</code>.
*/
public function add(Mapper $fileNameMapper)
{
if ($this == $fileNameMapper || $fileNameMapper instanceof ContainerMapper && $fileNameMapper->contains($this)) {
throw new BadMethodCallException("Circular mapper containment condition detected");
} else {
$this->mappers[] = $fileNameMapper;
}
}