For the purposes of this Code, an offence is associated with another if—
the offender—
is convicted of it in the proceedings in which the offender is convicted of the other offence, or
(although convicted of it in earlier proceedings) is sentenced for it at the same time as being sentenced for that offence, or
in the proceedings in which the offender is sentenced for the other offence, the offender—
admits having committed it, and
asks the court to take it into consideration in sentencing for that other offence.