code: def table_sources(self, tree):
      return self.visit(tree.children[0])
  
imports: from lark import Token, Tree
  from evadb.expression.tuple_value_expression import TupleValueExpression
  from evadb.parser.select_statement import SelectStatement
  from evadb.parser.table_ref import Alias, JoinNode, TableRef, TableValuedExpression
  from evadb.parser.types import JoinType
  from evadb.utils.logging_manager import logger
label_desc: Use image node_id 2 for calling the TableSources obj's underlying member method code with example usage: obj.table_sources(tree) and returns: self