public int getNextOpcode() {
    return nextOpcode;
  }
Gets the opcode value to try next when attempting to match an opcode to particular arguments.
This returns {@code Opcodes.NO_NEXT} to indicate that this is the last opcode to try in a
particular chain.

@return {@code Opcodes.MIN_VALUE..Opcodes.MAX_VALUE;} the opcode value
android/android_framework/dex-maker/src/main/java/com/android/dx/dex/code/Dop.java