docstr: get_columns method returns the columns returned by the API
docstr_tok: ["get_columns","method","returns","the","columns","returned","by","the","API"]
code: def get_columns(self):
      """get_columns method returns the columns returned by the API"""
      return [
          "title",
          "type",
          "source",
          "year",
          "pmid",
          "sgr",
          "issn",
          "scopus",
          "doi",
          "pui",
          "authors",
          "keywords",
          "link",
          "id",
      ]
  
imports: from mindsdb_sql.parser import ast
  import pandas
  from mindsdb.integrations.libs.api_handler import APITable
  from mindsdb.integrations.utilities.sql_utils import extract_comparison_conditions
label_desc: Use image node_id 2 for calling the CatalogSearchTable obj's underlying member method code with example usage: obj.get_columns() and returns: list