Import API/SPI provides the import workflow to import data form any support.

API is providing a secure workflow, from importers that connects to the data source (files, databases, wizards...) to the processors that append imported data to the workspace. It is based on the `Container` interface, that has a loading and unloading sub-interface. Importers are loading the container, then the controller is checking it's consistency and finally processors are unloading it.

See `org.gephi.io.importer.spi` package to know how to define new data importers.