Documentation and import fixing

Is there any documentation on the full API of ITKElastix?
Although the examples are helpful, it can sometimes be hard to find exactly what modules/functions are available and what input parameters they take. For example, I couldn't find an overview of the input parameters for `elastix_registration_method`, but I guessed most of them from the examples. However, a simple API overview would be very helpful.

Related and in addition to this, I'm having trouble with the ITKElastix import and its functions. I'm using Visual Studio Code to develop my code, and normally it shows the available functions/objects etc from an imported module. For example after having `import itk` typing `itk.` would show `elastix_registration_method` as an available function, along with all its input parameters. However, this does not work for this package, and I get errors that for example `ParameterObject` and `elastix_registration_method` are not known for the itk import. I always find this function very helpful, as it allows an overview of functions/input parameters at a quick glance. I think this is an overarching problem with the itk package though, since functions since as `join_series_image_filter` are also not recognized (however, `imread` and `imwrite` are). Is there a way to fix these imports?