You copied the Doc URL to your clipboard.

Bufferable attribute

This attribute specifies whether or not the associated transaction is bufferable.

The method set_bufferable() must set this attribute to the value passed as argument. The method is_bufferable() must return the value of this attribute.

A bufferable transaction can be delayed in reaching its final destination. This is usually only relevant to writes.

The default value of this attribute must be false.

This attribute is specific to the AXI and AHB buses. It is ignored for transactions modeling transfers on the APB bus.