code: def h2oconnection():
      """
      Python API test: h2o.connection()
      """
      # call with no arguments
      temp = h2o.connection()
      assert_is_type(temp, H2OConnection)
  
imports: import sys
  from tests import pyunit_utils
  import h2o
  from h2o.utils.typechecks import assert_is_type
  from h2o.backend.connection import H2OConnection
label_desc: Use image node_id 1 for calling a global function with example usage: h2oconnection() without return types