def _get_project_id(self):
fpath = os.environ.get('<STR_LIT>', None)<EOL>if fpath is None:<EOL><INDENT>raise Exception('<STR_LIT>'<EOL>'<STR_LIT>')<EOL><DEDENT>fpath = os.path.abspath(os.path.expanduser(fpath))<EOL>logger.debug('<STR_LIT>', fpath)<EOL>with open(fpath, '<STR_LIT:r>') as fh:<EOL><INDENT>cred_data = json.loads(fh.read())<EOL><DEDENT>return cred_data['<STR_LIT>']<EOL>
Get our projectId from the ``GOOGLE_APPLICATION_CREDENTIALS`` creds
JSON file.

:return: project ID
:rtype: str