Sequence Driver Connection
The transfer of request and response sequence items between sequences and their target driver is facilitated by a bidirectional TLM communication mechanism implemented in the sequencer.
The uvm_driver class contains an uvm_seq_item_pull_port which should be connected to an uvm_seq_item_pull_export in the sequencer associated with the driver. The port and export classes are parameterized with the types of the sequence_items that are going to be used for request and response transactions.
