docs: def has(self, module_name, class_name, attribute_name):
          """
          Parameters
          ----------
          module_name: String
              The analysis_path of the module
          class_name: String
              The analysis_path of the class
          attribute_name: String
              The analysis_path of the attribute
  
          Returns
          -------
          has_prior: bool
              True iff a prior exists for the module, class and attribute
          """
          self.read(module_name)
          return self.parser.has_option(class_name, attribute_name)