code: static NeutronApi neutronApi( Map<String,String> targetProperties ) throws TargetException {
  
  		validate( targetProperties );
  		return ContextBuilder
  				.newBuilder( PROVIDER_NEUTRON )
  				.endpoint( targetProperties.get( API_URL ))
  				.credentials( identity( targetProperties ), targetProperties.get( PASSWORD ))
  				.buildApi( NeutronApi.class );
  	}
docs: TODO: never used!!!???