docs: def resolveExpression(self, retina_name, body, sparsity=1.0):
          """Resolve an expression
          Args:
              retina_name, str: The retina name (required)
              body, ExpressionOperation: The JSON formatted encoded to be evaluated (required)
              sparsity, float: Sparsify the resulting expression to this percentage (optional)
              Returns: Fingerprint
          """
  
          resourcePath = '/expressions'
          method = 'POST'
  
          queryParams = {}
          headerParams = {'Accept': 'Application/json', 'Content-Type': 'application/json'}
          postData = None
  
          queryParams['retina_name'] = retina_name
          queryParams['sparsity'] = sparsity
          postData = body
          response = self.apiClient._callAPI(resourcePath, method, queryParams, postData, headerParams)
          return fingerprint.Fingerprint(**response.json())