3.6.7 Class Filtering
An exporter can limit the visibility of the classes in a package with the
include and exclude directives on the export definition. The value of each of
these directives is a comma-separated list of class names.
The following example shows an export statement, and a list of files with
their visibility status.
Export-Package: com.acme.foo; include:="Qux*,BarImpl";exclude:=QuxImpl