Registration of Java platform types.

{@link org.netbeans.spi.java.platform.PlatformInstall} lets you recognize a category of Java platform (e.g. Java SE, Java ME) and also supply a custom wizard to scan a directory in order to autodetect installed platforms.

The PlatformInstall instances are provided by the platform implementor and registered in the org-netbeans-api-java/platform/installers folder of system filesystem.