parameters: (self, value, default=None)
return_statement: return value
docstring: Force an attribute value into a string representation.
  
          A multi-valued attribute will be converted into a
          space-separated stirng.
docstring_summary: Force an attribute value into a string representation.
docstring_tokens: Force an attribute value into a string representation .
function: def _attr_value_as_string(self, value, default=None):
          """Force an attribute value into a string representation.
  
          A multi-valued attribute will be converted into a
          space-separated stirng.
          """
          value = self.get(value, default)
          if isinstance(value, list) or isinstance(value, tuple):
              value =" ".join(value)
          return value
function_tokens: def _attr_value_as_string ( self , value , default = None ) : value = self . get ( value , default ) if isinstance ( value , list ) or isinstance ( value , tuple ) : value = " " . join ( value ) return value