code: def get_type(self, stream_name):
      date_columns = []
      schema = {}
      for field in self.streams[stream_name]:
          fieldname, fieldtype = field.split(":")
          nullable = fieldtype.endswith("?")
          if nullable:
              fieldtype = fieldtype[:-1]
          if fieldtype == "DateTime":
              date_columns.append(fieldname)
          schema[fieldname] = self.datatypedict[fieldtype]
      return schema, date_columns
  
file_path: recommenders/examples/07_tutorials/KDD2020-tutorial/utils/PandasMagClass.py
imports: import numpy
  import pandas
label_desc: Use image node_id 4 for calling the MicrosoftAcademicGraph obj's underlying member method code with example usage: obj.get_type(stream_name) and returns: schema,  date_columns