How to get uvm_reg_file instance by name in uvm_reg_block

I went through uvm/docs_1.2/html/files/reg/uvm_reg_block.svh but couldn’t find any API which can help to get the instance of uvm_reg_file instantiated in uvm_reg_block. Some API’s like get_regfile_by_name would be great to have in uvm library.