docstr: Load the model from a native LightGBM model string.
code: def loadNativeModelFromString(model):
      """
      Load the model from a native LightGBM model string.
      """
      ctx = SparkContext._active_spark_context
      loader = (
          ctx._jvm.com.microsoft.azure.synapse.ml.lightgbm.LightGBMClassificationModel
      )
      java_model = loader.loadNativeModelFromString(model)
      return JavaParams._from_java(java_model)
  
file_path: SynapseML/lightgbm/src/main/python/synapse/ml/lightgbm/LightGBMClassificationModel.py
imports: from synapse.ml.lightgbm._LightGBMClassificationModel import _LightGBMClassificationModel
  from synapse.ml.lightgbm.mixin import LightGBMModelMixin
  from pyspark import SparkContext
  from pyspark.ml.common import inherit_doc
  from pyspark.ml.wrapper import JavaParams
  from synapse.ml.core.serialize.java_params_patch import *
label_desc: Use image node_id 2 for calling the LightGBMClassificationModel obj's underlying member method code with example usage: obj.loadNativeModelFromString(model) and returns: JavaParams