literal
open override fun literal(rule: StyleRule, reader: NybbleInputStream): String
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Answer the literal associated with the instruction associated with the receiver.
Return
The requested literal value, or null if no literal is associated with instructions of this kind.
Parameters
rule
The rule whose literal is desired.
reader
A NybbleInputStream for decoding additional operands, as necessary. Not all invocations will consume data from the reader. After the call, the reader is positioned after the instruction.