docs: def create_vpc(self):
          """Create a virtual private cloud on Amazon's Web services configured
          for deploying JupyterHubs.
          """
          self.create_stack(
              self.vpc_name,
              'amazon-eks-vpc.yaml',
              parameters=define_parameters(
                  VpcBlock="10.42.0.0/16",
                  Subnet01Block="10.42.1.0/24",
                  Subnet02Block="10.42.2.0/24",
                  Subnet03Block="10.42.3.0/24"
              )
          )