{
// only register the component if there is a m_registration for it !
if ( m_componentHoldersByName.get( key ) != null )
{
// this is not expected if all works ok
throw new ComponentException( "The component name '{0}" + componentHolder.getComponentMetadata().getName()
+ "' has already been registered." );
}
m_componentHoldersByName.put( key, componentHolder );
}