code: def validate(self):
      if not self._validate_requests or self._allow_raw_requests:
          return
      for i, req in enumerate(self.requests):
          try:
              req.validate()
          except (
              SchemaError,
              ValidationError,
              FormatError,
              Unresolvable,
          ) as e:
              raise Exception(
                  "Validation error in batch item #%d: %s" % (i, str(e))
              )
  
imports: import abc
  import six
  from jsonschema.exceptions import FormatError, SchemaError, ValidationError
  from .apimodel import ApiModel
  from .datamodel import DataModel
  from .defs import ENV_API_DEFAULT_REQ_METHOD
label_desc: Use image node_id 4 for calling the BatchRequest obj's underlying member method code with example usage: obj.validate() without return types