class_docstr: This is an example of how to create a validator. This validator performs no
  validation. In your own validator, you would want to have `validate()` performs
  some validation.
code: def do_validate(
      self,
      training_output: RLTrainingOutput,
      result_history: Optional[List[RLTrainingOutput]] = None,
      input_table_spec: Optional[TableSpec] = None,
  ) -> NoValidationResults:
      return NoValidationResults(should_publish=True)
  
file_path: ReAgent/reagent/validators/no_validation.py
imports: from typing import List, Optional
  from reagent.core.dataclasses import dataclass
  from reagent.core.result_types import NoValidationResults
  from reagent.validators.model_validator import ModelValidator
  from reagent.workflow.types import RLTrainingOutput, TableSpec
label_desc: Use image node_id 1 for calling the NoValidation obj's underlying member method code with example usage: obj.do_validate(training_output, result_history, input_table_spec) and returns: NoValidationResults