code: def step_it_should_pass_with(context):
      '''
      EXAMPLE:
          ...
          when I run "behave ..."
          then it should pass with:
              
      '''
      assert context.text is not None, "ENSURE: multiline text is provided."
      step_command_output_should_contain(context)
      assert_that(context.command_result.returncode, equal_to(0),
                  context.command_result.output)
docs: EXAMPLE:
          ...
          when I run "behave ..."
          then it should pass with:
              """
              TEXT
              """