NullableFieldVisitor(String fieldName) {
            super(AsmConstants.ASM_LEVEL)
            this.fieldName = fieldName
        }

        @Override
        FieldVisitor visitField(int access, String name, String fieldDescriptor, String signature, Object value) {
            if (fieldName == name) {
                return new FieldVisitor(AsmConstants.ASM_LEVEL) {
                    @Override

    override fun visitAttribute(attr: Attribute?) = Unit
    override fun visitInnerClass(name: String?, outerName: String?, innerName: String?, access: Int) = Unit
    override fun visitField(access: Int, name: String?, desc: String?, signature: String?, value: Any?): FieldVisitor? = null
}


private
abstract class BaseSignatureVisitor(private val asmLevel: Int) : SignatureVisitor(asmLevel) {