code: def logical_operator(self, tree):
      op = str(tree.children[0])
  
      if string_comparison_case_insensitive(op, "OR"):
          return ExpressionType.LOGICAL_OR
      elif string_comparison_case_insensitive(op, "AND"):
          return ExpressionType.LOGICAL_AND
      else:
          raise NotImplementedError(
              "Unsupported logical operator: {}".format(op)
          )
  
imports: import numpy
  from lark import Tree
  from evadb.catalog.catalog_type import ColumnType
  from evadb.expression.abstract_expression import ExpressionType
  from evadb.expression.comparison_expression import ComparisonExpression
  from evadb.expression.constant_value_expression import ConstantValueExpression
  from evadb.expression.logical_expression import LogicalExpression
  from evadb.utils.generic_utils import string_comparison_case_insensitive
label_desc: Use image node_id 9 for calling the Expressions obj's underlying member method code with example usage: obj.logical_operator(tree) and returns: ExpressionType, ExpressionType