code: def test_property():
      """Tests properties"""
      assert SilverkiteTemplate().allow_model_template_list is False
      assert (
          SilverkiteTemplate().allow_model_components_param_list
          is False
      )
  
      template = SilverkiteTemplate()
      assert template.DEFAULT_MODEL_TEMPLATE == "SK"
      assert isinstance(template.estimator, SilverkiteEstimator)
      assert template.estimator.coverage is None
      assert (
          template.apply_forecast_config_defaults().model_template
          == "SK"
      )
  
      estimator = SilverkiteEstimator(coverage=0.99)
      template = SilverkiteTemplate(estimator=estimator)
      assert template.estimator is estimator
  
imports: import dataclasses
  import datetime
  import warnings
  import numpy
  import pandas
  import pytest
  from greykite.algo.forecast.silverkite.forecast_silverkite import SilverkiteForecast
  from greykite.algo.forecast.silverkite.forecast_simple_silverkite_helper import generate_holiday_events
  from greykite.algo.forecast.silverkite.forecast_simple_silverkite_helper import get_event_pred_cols
  from greykite.common.constants import ADJUSTMENT_DELTA_COL
  from greykite.common.constants import END_TIME_COL
  from greykite.common.constants import METRIC_COL
  from greykite.common.constants import PREDICTION_BAND_COVERAGE
  from greykite.common.constants import START_TIME_COL
  from greykite.common.constants import TIME_COL
  from greykite.common.constants import VALUE_COL
  from greykite.common.evaluation import EvaluationMetricEnum
  from greykite.common.python_utils import assert_equal
  from greykite.common.testing_utils import generate_df_for_tests
  from greykite.common.testing_utils import generate_df_with_reg_for_tests
  from greykite.framework.constants import COMPUTATION_N_JOBS
  from greykite.framework.constants import CV_REPORT_METRICS_ALL
  from greykite.framework.templates.autogen.forecast_config import ComputationParam
  from greykite.framework.templates.autogen.forecast_config import EvaluationMetricParam
  from greykite.framework.templates.autogen.forecast_config import EvaluationPeriodParam
  from greykite.framework.templates.autogen.forecast_config import ForecastConfig
  from greykite.framework.templates.autogen.forecast_config import MetadataParam
  from greykite.framework.templates.autogen.forecast_config import ModelComponentsParam
  from greykite.framework.templates.forecaster import Forecaster
  from greykite.framework.templates.model_templates import ModelTemplateEnum
  from greykite.framework.templates.silverkite_template import SilverkiteTemplate
  from greykite.framework.templates.silverkite_template import apply_default_model_components
  from greykite.framework.templates.silverkite_template import get_extra_pred_cols
  from greykite.framework.utils.framework_testing_utils import assert_basic_pipeline_equal
  from greykite.framework.utils.framework_testing_utils import check_forecast_pipeline_result
  from greykite.sklearn.estimator.silverkite_estimator import SilverkiteEstimator
label_desc: Use image node_id 5 for calling a global function with example usage: test_property() without return types