code: def get_marshmallow_from_dataclass_field(dfield):
      """Helper method for checking marshmallow metadata succinctly."""
      return dfield.metadata["marshmallow_field"]
  
imports: from ludwig.schema.features.preprocessing.binary import BinaryPreprocessingConfig
  from ludwig.schema.features.preprocessing.category import CategoryPreprocessingConfig
  from ludwig.schema.features.preprocessing.utils import PreprocessingDataclassField
label_desc: Use image node_id 1 for calling a global function with example usage: get_marshmallow_from_dataclass_field(dfield) and returns: dfield