In reply to UVM_LOVE:
It is declared in the base class uvm_sequence.
BTW, we recommend against using the `uvm_do macros. See
https://verificationacademy.com/forums/uvm/startitem/finishitem-versus-uvmdo-macros
https://verificationacademy.com/forums/uvm/why-it-better-avoid-uvmdo-macro-body-task-why-using-startitem-and-finishitem-good-prctice-please-explain…
https://verificationacademy.com/search/forum/uvm_do%20macros%20start_item?solrsort=score%20desc