this doc says
Some additional rules
apply forcertain operators (e.g., a string as a left argument to the ‘%’ operator). Extensions must define their own conversion behavior.
per cambridge, when expressing have a connection,
apply to should be used. For example, "That part of the form is for UK citizens - it doesn't apply to you."
apply for is used to express the meaning of "to request something". For example, "applied for a new job".
So, the description in the doc should be
apply to rather than
Is my understanding right?