class_docstr: http://boto3.readthedocs.io/en/latest/reference/services/athena.html
code: def __init__(self, **kwargs):
      self.query_executions = {}
      self.results = kwargs.get("results", [{"test": "test"}])
      self.result_state = kwargs.get("result_state", "SUCCEEDED")
      self.raise_exception = False
  
imports: from datetime import datetime
  import uuid
  from io import BytesIO
  import zipfile
  import boto3
  from botocore.exceptions import ClientError
  from streamalert.shared.helpers.aws_api_client import AwsS3
label_desc: Use image node_id 1 to create a new MockAthenaClient object  with example: obj = MockAthenaClient()