How to use the apio.util.get_project_dir function in apio

def run(self, command, variables=[], board=None, packages=[]):
        """Executes scons for building"""

        # -- Check for the SConstruct file
        if not isfile(util.safe_join(util.get_project_dir(), 'SConstruct')):
            variables += ['-f']
            variables += [util.safe_join(
                util.get_folder('resources'), 'SConstruct')]
        else:
            click.secho('Info: use custom SConstruct file')

        # -- Resolve packages
        if self.profile.check_exe_default():
            # Run on `default` config mode
            if not util.resolve_packages(
              packages,
              self.profile.packages,
              self.resources.distribution.get('packages')
             ):
                # Exit if a package is not installed
                raise Exception