class_docstr: Unknown error.
  
  An example of where this error may be returned is if a Status value
  received from another address space belongs to an error-space that
  is not known to this address space. Also errors raised by APIs that
  do not return enough error information may be converted to this
  error.
  
  @@__init__
class_docstr_tok: ["Unknown","error",".","An","example","of","where","this","error","may","be","returned","is","if","a","Status","value","received","from","another","address","space","belongs","to","an","error-space","that","is","not","known","to","this","address","space",".","Also","errors","raised","by","APIs","that","do","not","return","enough","error","information","may","be","converted","to","this","error",".","@","@","__init__"]
docstr: Creates an `UnknownError`.
docstr_tok: ["Creates","an","`","UnknownError","`","."]
code: def __init__(self, node_def, op, message, error_code=UNKNOWN):
      """Creates an `UnknownError`."""
      super().__init__(node_def, op, message, error_code)
  
imports: import traceback
  import warnings
  from .None import error_codes
label_desc: Use image node_id 1 to create a new UnknownError object from inherited base classes: OpError with example: obj = UnknownError(node_def, op, message, error_code)