code: def getFingerprintsForExpressions(self, body, sparsity=1.0):
          
          return self._expressions.resolveBulkExpression(self._retina, body, sparsity)
docs: Bulk resolution of expressions
          Args:
              body, ExpressionOperation: The JSON encoded expression to be evaluated (required)
              sparsity, float: Sparsify the resulting expression to this percentage (optional)
          Returns:
              list of Fingerprint
          Raises:
              CorticalioException: if the request was not successful