package-version=${version;===;${Bundle-Version}}

Import-Package: \
 com.google.gson.*;version="${range;[==,+);${package-version}}", \
 *;resolution:=optional

Export-Package: \
 !about.html,!about_files, \
 *.internal*;x-internal:=true;version="${package-version}", \
 *;version="${package-version}"