parameters: (self)
docstring: Return API token prefix.
  
          Typically two uppercase letters followed by an underscore.
  
          Must implement.
docstring_summary: Return API token prefix.
docstring_tokens: Return API token prefix .
function: def api_prefix(self):
          """Return API token prefix.
  
          Typically two uppercase letters followed by an underscore.
  
          Must implement."""
          raise NotImplementedError
function_tokens: def api_prefix ( self ) : raise NotImplementedError