docs: public <X> DataSource<X> readFileOfPrimitives(String filePath, Class<X> typeClass) {
  		Preconditions.checkNotNull(filePath, "The file path may not be null.");
  
  		return new DataSource<>(this, new PrimitiveInputFormat<>(new Path(filePath), typeClass), TypeExtractor.getForClass(typeClass), Utils.getCallLocationName());
  	}