How many chars have been consumed
during parsing in signatureToString().
Read by methodSignatureToString().
Set by side effect,but only internally.
The `WIDE' instruction is used in the
byte code to allow 16-bit wide indices
for local variables. This opcode
precedes an `ILOAD', e.g.. The opcode
immediately following takes an extra
byte which is combined with the
following byte to form a
16-bit value.