ssh-add -l does not show the location of the key

when I run ssh-add -l, it does not show the location of the key

it shows the following

4096 SHA256:bBMtB9wL6RXRWhvx5M+LDox6A2gq61CDtZN9F4bi3Gw masoud@x.y (RSA) 2048 SHA256:QbCO5y5SX+CSHd6++yXPpJuWGrxGCx5liNktjz51ZWY masoud@x (RSA) 

how to make it shows the key location as well?

my system is Mojave 10.14.4