public void visitIntInsn(final int opcode, final int operand) {
        // Label currentBlock = this.currentBlock;
        // adds the instruction to the bytecode of the method
        // if (opcode == Opcodes.SIPUSH) {
        // code.put12(opcode, operand);
        // } else { // BIPUSH or NEWARRAY
        code.put11(opcode, operand);
        // }
    }
Maximum number of local variables for this method.
src/main/java/com/alibaba/fastjson/asm/MethodWriter.java