not necesary it it 0

not necesary it it 0

https://github.com/apache/incubator-wayang/blob/4cc0bfdca06dda171b661822daae5fa438d9d475/python/src/pywy/core/translator.py#L49

```python

#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

from pywy.graph.types import (WGraphOfVec, NodeVec)
from pywy.core.plugin import Plugin
from pywy.core.plan import PywyPlan
from pywy.core.mapping import Mapping

class Translator:

plugin: Plugin
plan: PywyPlan

def __init__(self, plugin: Plugin, plan: PywyPlan):
self.plugin = plugin
self.plan = plan

def translate(self):
mappings: Mapping = self.plugin.get_mappings()
graph = WGraphOfVec(self.plan.sinks)

def translate2plugin(current_op: NodeVec, next_op: NodeVec):
if current_op is None:
return

if current_op.current[1] is None:
current_op.current[1] = mappings.get_instanceof(current_op.current[0])

if next_op is None:
return
if next_op.current[1] is None:
next_op.current[1] = mappings.get_instanceof(next_op.current[0])

# TODO not necesary it it 0
current_op.current[1].connect(0, next_op.current[1], 0)

graph.traversal(graph.starting_nodes, translate2plugin)

node = []
for elem in graph.starting_nodes:
node.append(elem.current[1])

return PywyPlan({self.plugin}, node)

```

faa6d95fe21aa8beb6316ff96ecbcc5626efb21e

Start in python/src/pywy/core/translator.py at the TODO near line 49, then read the surrounding graph traversal and Plugin connection APIs. Determine what the comment means by "0" and verify the intended translation behavior before changing it; done means the zero-index connection behavior matches the project’s expectation.

Written by the indexing model from the issue text.