code: def delete_statement(self, tree):
      table_ref = None
      where_clause = None
      for child in tree.children:
          if isinstance(child, Tree):
              if child.data == "table_name":
                  table_name = self.visit(child)
                  table_ref = TableRef(table_name)
              elif child.data == "where_expr":
                  where_clause = self.visit(child)
  
      delete_stmt = DeleteTableStatement(table_ref, where_clause)
      return delete_stmt
  
imports: from lark.tree import Tree
  from evadb.parser.delete_statement import DeleteTableStatement
  from evadb.parser.table_ref import TableRef
label_desc: Use image node_id 1 for calling the Delete obj's underlying member method code with example usage: obj.delete_statement(tree) and returns: delete_stmt