java.lang.NullPointerException while processing OSGI-INF as a directory

Depends on which tool and the way was used to created a .esa file, the OSGI-INF can be seen by RawSubsystemResource as a normal directory entry and then be processed by its computeResources() method.

This method will throw an java.lang.NullPointerException:

08:38:33.903||DEBUG|File "OSGI-INF" in subsystem with location "org.c8tech.runtime.esa.kernel-1493206713882" will be ignored because it is not recognized as a supported resource|o.a.a.s.c.i.RawSubsystemResource||o.a.a.s.c.i.RawSubsystemResource@496[Start Level: Equinox Container: b3c76716-7e67-4fbd-aadb-6d5936b057d9]

java.lang.NullPointerException: null
at org.apache.aries.subsystem.core.internal.BundleResource.computeManifest(BundleResource.java:62)
at org.apache.aries.subsystem.core.internal.BundleResource.<init>(BundleResource.java:73)
at org.apache.aries.subsystem.core.internal.RawSubsystemResource.addResource(RawSubsystemResource.java:492)
at org.apache.aries.subsystem.core.internal.RawSubsystemResource.computeResources(RawSubsystemResource.java:459)
at org.apache.aries.subsystem.core.internal.RawSubsystemResource.<init>(RawSubsystemResource.java:134)
at org.apache.aries.subsystem.core.internal.SubsystemResource.<init>(SubsystemResource.java:91)
at org.apache.aries.subsystem.core.internal.InstallAction.run(InstallAction.java:60)
at org.apache.aries.subsystem.core.internal.InstallAction.run(InstallAction.java:1)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.aries.subsystem.core.internal.BasicSubsystem.install(BasicSubsystem.java:677)
at org.apache.aries.subsystem.core.internal.BasicSubsystem.install(BasicSubsystem.java:730)
at org.apache.aries.subsystem.core.internal.BasicSubsystem.install(BasicSubsystem.java:304)
at org.apache.aries.subsystem.core.internal.BasicSubsystem.install(BasicSubsystem.java:1)

for (IFile file : directory.listFiles()) {
            if (file.isFile()) {
                addResource(file, file.convertNested(), manifest, result);
            } else {
-->                addResource(file, file.convert(), manifest, result);
            }
		}