Create a template in openshift cluster using fabric8io

Question

I'm trying to use fabric8 java libraries to interact with my local minishift cluster (openshift). Basically my java application has to create a new project and create a template. This is due to the fact that in openshift a custom template has to be created for each new project. With "create a template" I mean I need my custom template to be seen in the catalog panel of my openshift web console (or with [$ oc get templates] using a terminal). I need to do the equivalent of "oc apply -f my-template-file.yaml", but with fabric8 libraries in java. Here is a link to an example of usage https://github.com/fabric8io/kubernetes-client/blob/master/kubernetes-examples/src/main/java/io/fabric8/openshift/examples/TemplateExample.java

I've tried to do

        final Template loadedTemplate = client.templates()
          .load(TemplateExample.class.getResourceAsStream("/my-template-file.yaml")).get();
        for (Parameter p : loadedTemplate.getParameters()) {
          final String required = Boolean.TRUE.equals(p.getRequired()) ? "*" : "";
          logger.info("Loaded parameter from template: {}{} - '{}' ({})",
            p.getName(), required, p.getValue(), p.getGenerate());

But what I'm getting is a null pointer exception in method load() (line 2) I thought it was becouse the path to the file is wrong, but the same error shows up even if i use

Paths.get("/my-template-file.yaml").toAbsolutePath().normalize().toString();

instead of "/my-template-file.yaml"