Retrieve type of GATK jar, allowing support for older GATK lite.
        Returns either `lite` (targeting GATK-lite 2.3.9) or `restricted`,
        the latest 2.4+ restricted version of GATK.

def gatk_type(self):
        """Retrieve type of GATK jar, allowing support for older GATK lite.
        Returns either `lite` (targeting GATK-lite 2.3.9) or `restricted`,
        the latest 2.4+ restricted version of GATK.
        """
        if LooseVersion(self.gatk_major_version()) > LooseVersion("3.9"):
            return "gatk4"
        elif LooseVersion(self.gatk_major_version()) > LooseVersion("2.3"):
            return "restricted"
        else:
            return "lite"