'List files installed by package [package].
:param package: Package name.
:return: List of paths installed by package.'

def list_files(self, package):

    if os.path.isfile(package):
        l_cmd = ((self.lowlevel_base_cmd + '    -c    ') + package)
    else:
        l_cmd = ((self.lowlevel_base_cmd + '    -l    ') + package)
    return utils.system_output(l_cmd).split('\n')
