The inverse of physicalInputKey — recover the patch a key was built from, so a layer holding only the identity (the head-amp ledgers) can still name the PORT an operator sees. undefined for anything that is not a well-formed key (no NUL separator).
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The inverse of physicalInputKey — recover the patch a key was built from, so a layer holding only the identity (the head-amp ledgers) can still name the PORT an operator sees.
undefinedfor anything that is not a well-formed key (no NUL separator).