addFloat64 method
Add the field with the given 64-bit double value. The field
is not added if the value is equal to def.
Implementation
void addFloat64(int field, double? value, [double? def]) {
assert(_inVTable);
if (value != null && value != def) {
_prepare(_sizeofFloat64, 1);
_trackField(field);
_setFloat64AtTail(_tail, value);
}
}